QRegExp include cleanup

This patch adds the missing include statements for QRegExp.

Change-Id: Ibb03b929940adb84ae190b5090cb6b88653cc14c
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/libs/qmljs/qmljscheck.cpp

@@ -33,6 +33,7 @@
 
 #include <QColor>
 #include <QDir>
+#include <QRegExp>
 
 using namespace QmlJS;
 using namespace QmlJS::AST;