fix memory and resource leak

src/lxc/attach.c

@@ -200,6 +200,7 @@ static struct lxc_proc_context_info *lxc_proc_get_context_info(pid_t pid)
 	info = calloc(1, sizeof(*info));
 	if (!info) {
 		SYSERROR("Could not allocate memory.");
+		fclose(proc_file);
 		return NULL;
 	}
 

src/lxc/bdev/bdev.c

@@ -754,8 +754,10 @@ int do_mkfs_exec_wrapper(void *args)
 		return -1;
 
 	ret = snprintf(mkfs, len, "mkfs.%s", data[0]);
-	if (ret < 0 || (size_t)ret >= len)
+	if (ret < 0 || (size_t)ret >= len) {
+		free(mkfs);
 		return -1;
+	}
 
 	TRACE("executing \"%s %s\"", mkfs, data[1]);
 	execlp(mkfs, mkfs, data[1], (char *)NULL);