Fix the immediate game crash when using the "ignore" functionality. [V]
Fix the immediate game crash when using the "ignore" functionality. [V]

Yep, because I deleted one "= 0" too many in
d930a9eb5473efe9a30678a137a8c7f1dfa5e63a, this feature has been
broken since the 2016-09-22 build.

Guess that was the one regression that convinced me that we actually
need a well-defined and automated testing procedure now.

thpatch/thcrap,thpatch/thcrap,thpatch/thcrap,thpatch/thcrap,thpatch/thcrap