btrfs-progs: provide positive errno to strerror in cmd_restore

check_mounted returns a negative errno, so it needs to be flipped
again before passing to strerror.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>

diff --git a/cmds-restore.c b/cmds-restore.c
index 12b2188..9385042 100644 (file)
--- a/cmds-restore.c
+++ b/cmds-restore.c
@@ -836,7 +836,7 @@ int cmd_restore(int argc, char **argv)
 
        if ((ret = check_mounted(argv[optind])) < 0) {
                fprintf(stderr, "Could not check mount status: %s\n",
-                       strerror(ret));
+                       strerror(-ret));
                return ret;
        } else if (ret) {
                fprintf(stderr, "%s is currently mounted.  Aborting.\n", argv[optind]);