proc_parse: Delay freeing of kernel fs type

We will need it for additional handling once parsing
of mount entry is complete (in particular btrfs requires
additional processing to figure out subvolumes names).
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

proc_parse.c

@@ -759,19 +759,21 @@ static int parse_mountinfo_ent(char *str, struct mount_info *new)
 	if (ret != 3)
 		return -1;
 
+	ret = 0;
 	new->fstype = find_fstype_by_name(fstype);
-	free(fstype);
 
 	new->options = xmalloc(strlen(opt) + 1);
 	if (!new->options)
-		return -1;
+		goto err;
 
 	if (parse_sb_opt(opt, &new->flags, new->options))
-		return -1;
+		goto err;
 
+	ret = 0;
+err:
 	free(opt);
-
-	return 0;
+	free(fstype);
+	return ret;
 }
 
 struct mount_info *parse_mountinfo(pid_t pid)