Improve the debugging msg by also printing even if bb_free is 0.
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/c894f1d1d30f86ae38f4e3a861949665b6dc61cd.1589086800.git.riteshh@linux.ibm.comSigned-off-by: Theodore Ts'o <tytso@mit.edu>