Fixed ticket #300 (wrong level given)

Enable checks of dangerous functions only when --style option used.

http://apps.sourceforge.net/trac/cppcheck/ticket/300

src/checkdangerousfunctions.h

@@ -40,8 +40,11 @@ public:
     void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
     {
         CheckDangerousFunctionsClass checkDangerousFunctionsClass(tokenizer, settings, errorLogger);
+        if (settings->_checkCodingStyle)
+        {
             checkDangerousFunctionsClass.dangerousFunctions();
         }
+    }
 
     /** Check for dangerous functions */
     void dangerousFunctions();