Both callers of ReadIniArgs need the string removed afterward. Prior to
8fb9a0f, only the parser for `-ini` needed the string removed. The
caller for the automatic ini file ended and destroyed the container. As
of 8fb9a0f, the container persists. Leaving the string in the container
causes a bad error message if the command line is rejected.
It is bad form to have ReadIniArgs pop, but the caller push. However,
the two callers use different signatures for emplace_back(), so unifying
the push would require calling a suboptimal emplace_back. Choose the
lesser evil of unbalanced push/pop.
Reported-by: zicodxx <https://github.com/dxx-rebirth/dxx-rebirth/issues/198>
0bba26fde5