Compile fix for pedantic C++ compilers.

Get rid of all those ugly stray semicolons. They are not valid C++.

src/plugins/help/helpindexfilter.cpp

@@ -42,7 +42,7 @@ using namespace Locator;
 using namespace Help;
 using namespace Help::Internal;
 
-Q_DECLARE_METATYPE(ILocatorFilter*);
+Q_DECLARE_METATYPE(ILocatorFilter*)
 
 HelpIndexFilter::HelpIndexFilter()
 {