getopt: give accurate ambiguity diagnostic on mem exhaustion * lib/getopt.c (_getopt_internal_r): The previous commit broke out the loop too early, which could give a false indication of ambiguous options under memory exhaustion.

#!/bin/sh

# This test is not enabled by default, because MSVCRT does not support and
# will likely never support locales with MB_CUR_MAX > 2.

# Test a GB18030 locale.
./test-wcrtomb-w32${EXEEXT} Chinese_China 54936