[RFC][PATCH] notmuch: Workaround to allow ignoring non-void function return.

[Dmitry Kurochkin]

Hi David.

Perhaps I am missing something here.  But I do not get any warnings when
building with GCC 4.6.2 with -Wall -Werror (-O2 and -O0).  I do not like
adding any complex hacks to make the build warning-free on old GCC
versions.  If this happens on the build bot, we should just update it or
ignore the warnings.

Regards,
  Dmitry