drop some useless return statements

code/botlib/be_ai_chat.c

@@ -1506,7 +1506,6 @@ void BotMatchVariable(bot_match_t *match, int variable, char *buf, int size)
 	{
 		strcpy(buf, "");
 	} //end else
-	return;
 } //end of the function BotMatchVariable
 //===========================================================================
 //