Revert "Removed useless reference to the QPluginLoader in the Plugin structure"

This reverts commit 1e881d0b2f to avoid future conflicts.

sdrbase/plugin/pluginmanager.cpp

@@ -163,9 +163,9 @@ void PluginManager::loadPluginsDir(const QDir& dir)
 				qWarning() << "PluginManager::loadPluginsDir: " << qPrintable(loader->errorString());
 			}
 
-			if (plugin)
+			if (plugin != 0)
 			{
-				m_plugins.append(Plugin(fileName, plugin));
+				m_plugins.append(Plugin(fileName, loader, plugin));
 			}
 			else
 			{

sdrbase/plugin/pluginmanager.h

@@ -42,10 +42,12 @@ public:
 	struct Plugin
 	{
 		QString filename;
+		QPluginLoader* loader;
 		PluginInterface* pluginInterface;
 
-		Plugin(const QString& _filename, PluginInterface* _plugin) :
+		Plugin(const QString& _filename, QPluginLoader* pluginLoader, PluginInterface* _plugin) :
 			filename(_filename),
+			loader(pluginLoader),
 			pluginInterface(_plugin)
 		{ }
 	};