btrfs: tests: allocate dummy fs_info and root in test_find_delalloc()

Allocate fs_info and root to have a valid fs_info pointer in case it's
dereferenced by a helper outside of tests, like find_lock_delalloc_range().

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-01-29 19:04:33 +01:00
commit b2136cc288