btrfs-progs: fix test for return of realpath in find_mount_root()

find_mount_root() tries to test for realpath() failure, but
tests the wrong value.  Fix it.

Resolves-Coverity-CID: 1125940
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

diff --git a/cmds-send.c b/cmds-send.c
index 39110e7..53e9a53 100644 (file)
--- a/cmds-send.c
+++ b/cmds-send.c
@@ -98,7 +98,7 @@ int find_mount_root(const char *path, char **mount_root)
 
        ret = 0;
        *mount_root = realpath(longest_match, NULL);
-       if (!mount_root)
+       if (!*mount_root)
                ret = -errno;
 
        free(longest_match);