btrfs-progs: scrub can leak fd 0

< 0 is returned for errors opening the file, this code could leak fd 0.

Signed-off-by: Zach Brown <zab@redhat.com>

diff --git a/cmds-scrub.c b/cmds-scrub.c
index 70d2683..8655d3d 100644 (file)
--- a/cmds-scrub.c
+++ b/cmds-scrub.c
@@ -754,7 +754,7 @@ static int scrub_write_progress(pthread_mutex_t *m, const char *fsid,
 {
        int ret;
        int err;
-       int fd = 0;
+       int fd = -1;
        int old;
 
        ret = pthread_mutex_lock(m);
@@ -782,7 +782,7 @@ static int scrub_write_progress(pthread_mutex_t *m, const char *fsid,
                goto out;
 
 out:
-       if (fd > 0) {
+       if (fd >= 0) {
                ret = close(fd);
                if (ret)
                        err = -errno;