btrfs-progs: add crude error handling when transaction start fails

Currently transaction bugs out insided btrfs_start_transaction in case
of error, we want to lift the error handling to the callers. This patch
adds the BUG_ON anywhere it's been missing so far. This is not the best
way of course. Transforming BUG_ON to a proper error handling highly
depends on the caller and should be dealt with case by case.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/dir-test.c b/dir-test.c
index 24f2c2e3..cfb77f2a 100644
--- a/dir-test.c
+++ b/dir-test.c
@@ -443,6 +443,7 @@ int main(int ac, char **av)
 	}
 
 	trans = btrfs_start_transaction(root, 1);
+	BUG_ON(IS_ERR(trans));
 
 	dir_oid = btrfs_super_root_dir(&super);