remove useless if-before-free (and free-like) functions

See comments in http://bugzilla.redhat.com/839925 for
the code to perform this change.

Signed-off-by: Jim Meyering <meyering@redhat.com>
BUG: 839925
Change-Id: I10e4ecff16c3749fe17c2831c516737e08a3205a
Reviewed-on: http://review.gluster.com/3661
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

6 files changed, 12 insertions, 32 deletions

diff --git a/xlators/performance/io-cache/src/io-cache.c b/xlators/performance/io-cache/src/io-cache.c
index bdaf0f1b81a..6062f9a6863 100644
--- a/xlators/performance/io-cache/src/io-cache.c
+++ b/xlators/performance/io-cache/src/io-cache.c
@@ -1495,13 +1495,9 @@ ioc_get_priority_list (const char *opt_str, struct list_head *first)
                 stripe_str = strtok_r (NULL, ",", &tmp_str);
         }
 out:
-        if (string != NULL) {
-                GF_FREE (string);
-        }
+        GF_FREE (string);
 
-        if (dup_str != NULL) {
-                GF_FREE (dup_str);
-        }
+        GF_FREE (dup_str);
 
         if (max_pri == -1) {
                 list_for_each_entry_safe (curr, tmp, first, list) {
diff --git a/xlators/performance/md-cache/src/md-cache.c b/xlators/performance/md-cache/src/md-cache.c
index cf1aee9d6b9..55923990d49 100644
--- a/xlators/performance/md-cache/src/md-cache.c
+++ b/xlators/performance/md-cache/src/md-cache.c
@@ -222,8 +222,7 @@ mdc_local_wipe (xlator_t *this, mdc_local_t *local)
         if (local->fd)
                 fd_unref (local->fd);
 
-        if (local->linkname)
-                GF_FREE (local->linkname);
+        GF_FREE (local->linkname);
 
         if (local->xattr)
                 dict_unref (local->xattr);
@@ -249,8 +248,7 @@ mdc_inode_wipe (xlator_t *this, inode_t *inode)
         if (mdc->xattr)
                 dict_unref (mdc->xattr);
 
-        if (mdc->linkname)
-                GF_FREE (mdc->linkname);
+        GF_FREE (mdc->linkname);
 
         GF_FREE (mdc);
 
diff --git a/xlators/performance/quick-read/src/quick-read.c b/xlators/performance/quick-read/src/quick-read.c
index 6e4ce816ec7..349ea778902 100644
--- a/xlators/performance/quick-read/src/quick-read.c
+++ b/xlators/performance/quick-read/src/quick-read.c
@@ -29,9 +29,7 @@ qr_local_free (qr_local_t *local)
                 call_stub_destroy (local->stub);
         }
 
-        if (local->path != NULL) {
-                GF_FREE (local->path);
-        }
+        GF_FREE (local->path);
 
         mem_put (local);
 
@@ -1371,9 +1369,7 @@ out:
         }
 
 ret:
-        if (vector) {
-                GF_FREE (vector);
-        }
+        GF_FREE (vector);
 
         if (iobref) {
                 iobref_unref (iobref);
@@ -3754,13 +3750,9 @@ qr_get_priority_list (const char *opt_str, struct list_head *first)
                 priority_str = strtok_r (NULL, ",", &tmp_str);
         }
 out:
-        if (string != NULL) {
-                GF_FREE (string);
-        }
+        GF_FREE (string);
 
-        if (dup_str != NULL) {
-                GF_FREE (dup_str);
-        }
+        GF_FREE (dup_str);
 
         if (max_pri == -1) {
                 list_for_each_entry_safe (curr, tmp, first, list) {
diff --git a/xlators/performance/read-ahead/src/read-ahead.c b/xlators/performance/read-ahead/src/read-ahead.c
index 61a07d04e96..7b23049d371 100644
--- a/xlators/performance/read-ahead/src/read-ahead.c
+++ b/xlators/performance/read-ahead/src/read-ahead.c
@@ -1071,9 +1071,7 @@ init (xlator_t *this)
 
 out:
         if (ret == -1) {
-                if (conf != NULL) {
-                        GF_FREE (conf);
-                }
+                GF_FREE (conf);
         }
 
         return ret;
diff --git a/xlators/performance/symlink-cache/src/symlink-cache.c b/xlators/performance/symlink-cache/src/symlink-cache.c
index 2e1b7a9be4e..3b5fbc252ec 100644
--- a/xlators/performance/symlink-cache/src/symlink-cache.c
+++ b/xlators/performance/symlink-cache/src/symlink-cache.c
@@ -137,8 +137,7 @@ sc_cache_set (xlator_t *this, inode_t *inode, struct iatt *buf,
 err:
 
 	if (sc) {
-		if (sc->readlink)
-			FREE (sc->readlink);
+		FREE (sc->readlink);
 		sc->readlink = NULL;
 		FREE (sc);
 	}
diff --git a/xlators/performance/write-behind/src/write-behind.c b/xlators/performance/write-behind/src/write-behind.c
index a743039d9ab..81a254df6a0 100644
--- a/xlators/performance/write-behind/src/write-behind.c
+++ b/xlators/performance/write-behind/src/write-behind.c
@@ -577,9 +577,7 @@ out:
                 iobref_unref (iobref);
         }
 
-        if (vector != NULL) {
-                GF_FREE (vector);
-        }
+        GF_FREE (vector);
 
         if (bytes == -1) {
                 /*
@@ -2963,8 +2961,7 @@ init (xlator_t *this)
 
 out:
         if (ret) {
-                if (conf)
-                        GF_FREE (conf);
+                GF_FREE (conf);
         }
         return ret;
 }