fix plugin load

Change-Id: I2c6f7d842462a80bfec1ae16f36b8d1b67782e6c

frame/controller/dockpluginscontroller.cpp

@@ -45,6 +45,7 @@ void DockPluginsController::loadPlugins()
         PluginsItemInterface *interface = qobject_cast<PluginsItemInterface *>(pluginLoader->instance());
         if (!interface)
         {
+            pluginLoader->unload();
             pluginLoader->deleteLater();
             continue;
         }

frame/main.cpp

@@ -2,6 +2,7 @@
 #include "window/mainwindow.h"
 
 #include <dapplication.h>
+#include <QDir>
 
 #include <unistd.h>
 
@@ -36,6 +37,10 @@ int main(int argc, char *argv[])
     app.setApplicationDisplayName("DDE Dock");
     app.setApplicationVersion("2.0");
 
+#ifndef QT_DEBUG
+    QDir::setCurrent(QApplication::applicationDirPath());
+#endif
+
     MainWindow mw;
     QDBusConnection::sessionBus().registerService("com.deepin.dde.dock");
     QDBusConnection::sessionBus().registerObject("/com/deepin/dde/dock", "com.deepin.dde.dock", &mw);