fs/ecryptfs/messaging.c: remove null test before kfree

Fix checkpatch warning:
WARNING: kfree(NULL) is safe this check is probably not required
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: ecryptfs@vger.kernel.org
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>

fs/ecryptfs/messaging.c

@@ -434,7 +434,6 @@ void ecryptfs_release_messaging(void)
 		mutex_lock(&ecryptfs_msg_ctx_lists_mux);
 		for (i = 0; i < ecryptfs_message_buf_len; i++) {
 			mutex_lock(&ecryptfs_msg_ctx_arr[i].mux);
-			if (ecryptfs_msg_ctx_arr[i].msg)
 			kfree(ecryptfs_msg_ctx_arr[i].msg);
 			mutex_unlock(&ecryptfs_msg_ctx_arr[i].mux);
 		}