lib: test-data-stack - ensure t_push() and t_pop() are balanced in fatal tests If the t_pop() unexpectedly succeeds, we won't want to do another one upon entering the function again.
lib: test-data-stack - ensure t_push() and t_pop() are balanced in fatal tests
If the t_pop() unexpectedly succeeds, we won't want to do another one upon
entering the function again.

Signed-off-by: Phil Carmody <e888d2bd6f13f82caa51a37c03d034c76f661ba3@dovecot.fi>

dscho/dovecot,dscho/dovecot,dscho/dovecot,dscho/dovecot,dscho/dovecot