fix load default theme

plugins/messageviewerheaderplugins/defaultgrantleeheaderstyleplugin/CMakeLists.txt

@@ -18,4 +18,4 @@ target_link_libraries(messageviewer_defaultgrantleeheaderstyleplugin
 )
 
 install(TARGETS messageviewer_defaultgrantleeheaderstyleplugin DESTINATION ${PLUGIN_INSTALL_DIR}/messageviewer)
-install(DIRECTORY theme/5.2 DESTINATION ${KDE_INSTALL_DATADIR}/messageviewer/themes/ )
+install(DIRECTORY theme/5.2 DESTINATION ${KDE_INSTALL_DATADIR}/messageviewer/defaultthemes/ )

plugins/messageviewerheaderplugins/defaultgrantleeheaderstyleplugin/defaultgrantleeheaderstyleinterface.cpp

@@ -42,6 +42,7 @@ void DefaultGrantleeHeaderStyleInterface::createAction(KActionMenu *menu, QActio
     const QStringList defaultThemePath = QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("messageviewer/defaultthemes/"), QStandardPaths::LocateDirectory);
     if (!defaultThemePath.isEmpty()) {
         const QString themeName = DefaultGrantleeHeaderStylePluginSettings::self()->themeName();
+        qDebug()<<" themeName"<<themeName << "defaultThemePath.at(0)"<<defaultThemePath.at(0);
         mDefaultTheme = GrantleeTheme::ThemeManager::loadTheme(defaultThemePath.at(0),
                         themeName,
                         QStringLiteral("kmail_default.desktop"));