only run CheckClass::checkConst if style checking is on

lib/checkclass.cpp

@@ -1401,6 +1401,9 @@ void CheckClass::thisSubtraction()
 
 void CheckClass::checkConst()
 {
+    if (!_settings->_checkCodingStyle)
+        return;
+
     for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
     {
         if (Token::Match(tok, "class %var% :|{"))

lib/checkclass.h

@@ -66,6 +66,7 @@ public:
             }
         }
         checkClass.virtualDestructor();
+        checkClass.checkConst();
     }
 
 

test/testclass.cpp

@@ -1518,6 +1518,7 @@ private:
 
         // Check..
         Settings settings;
+        settings._checkCodingStyle = true;
         CheckClass checkClass(&tokenizer, &settings, this);
         checkClass.checkConst();
     }