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 <[e-mail]>
Cc: [e-mail]
Signed-off-by: Tyler Hicks <[e-mail]>

fs/ecryptfs/messaging.c

···
 		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);
+			kfree(ecryptfs_msg_ctx_arr[i].msg);
 			mutex_unlock(&ecryptfs_msg_ctx_arr[i].mux);
 		}
 		kfree(ecryptfs_msg_ctx_arr);