Fix linking of applications that use QFontDatabase::removeApplication…

…Font.

Application font support requires the platform to implement the private
registerFont() function, but it is also necessary to implement the public
QFontDatabase::removeApplicationFont() function in the platform fontdatabase.

The former is implemented as a stub, indicating an error to the caller. The
latter was missing as a stub, causing link errors in WebKit.

Reviewed-by: Jason Barron

src/gui/text/qfontdatabase_s60.cpp

@@ -287,6 +287,12 @@ static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
     Q_UNUSED(fnt);
 }
 
+bool QFontDatabase::removeApplicationFont(int handle)
+{
+    Q_UNUSED(handle);
+    return false;
+}
+
 bool QFontDatabase::supportsThreadedFontRendering()
 {
     return false;