* mcc/HandleInput.c: added a missing end of string check when double/tripple clicking the contents. This might have caused BetterString.mcc to enter an endless loop. Thanks to Mikhail Malyshev for the hint. Please note however that the used russian locale to trigger this bug causes some other issues which prevent BetterString.mcc from marking to the correct portion of the contents as a word. This is beyond the scope of BetterString.mcc.