Update core.cpp

Author: invincibleqc

src/core/modules/core/core.cpp

@@ -33,7 +33,8 @@
 
 void ConsoleMessage(const char* msg)
 {
-	char* pMsg = (char*) msg;
+	// Ensure all formatting specifiers are escaped to prevent a crash (fix for issue #275).
+	char* pMsg = (char*) extract<char *>(str(msg).replace("%", "%%"));
 	int iLen = strlen(msg);
 
 	while(iLen > 0) {
@@ -77,4 +78,4 @@ list GetCoreModules()
 	}
 
 	return result;
-}
+}