BUG/MINOR: ssl_ckch: Fix possible uninitialized value in show_crlfile I/O handler

Commit 9a99e5478 ("BUG/MINOR: ssl_ckch: Dump CRL transaction only once if
show command yield") introduced a regression leading to a build error
because of a possible uninitialized value. It is now fixed.

This patch must be backported as far as 2.5.
1 file changed