qtcassert: move actual printing to separate function and enforce style

This also allows simple setting of breakpoints on failed asserts.

Change-Id: I6dd84cbfaf659d57e39f3447386cebc0221b2b84
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/valgrind/callgrind/callgrindparser.cpp

@@ -268,7 +268,7 @@ void Parser::Private::parse(QIODevice *device)
             }
         }
 #endif
-        QTC_ASSERT(calledFunction, continue)
+        QTC_ASSERT(calledFunction, continue);
         callData.call->setCallee(calledFunction);
         calledFunction->addIncomingCall(callData.call);