no sense in registering a non-reference

[Johan Vromans]

Calling Wx::Locale::FindLanguageInfo with a unknown language name gives
"PANIC: no sense in registering a non-reference" instead of an undef
result.

This is Wx 0.92 on Fedora 14.

$ perl -wle 'use Wx; warn  Wx::Locale::FindLanguageInfo("nl_NL")'
Wx::LanguageInfo=SCALAR(0x900ca00) at -e line 1
$ perl -wle 'use Wx; warn  Wx::Locale::FindLanguageInfo("nx_NL")'
PANIC: no sense in registering a non-reference at -e line 1.

-- Johan