nJoy: Readded some fixes to nJoy (Notice: these changes have nothing to do with the argument earlier. These are only for fixing nJoy (point one and three in the 1991 revision)). Now opening the Wiimote plugin doesn't crash either (it was just a typo in GetWiimote()).

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2000 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Common/Src/Plugin.cpp

@@ -64,6 +64,8 @@ CPlugin::CPlugin(const char* _szName) : valid(false)
 	m_DoState != 0)
 	valid = true;
 
+	// Save the filename for this plugin
+	Filename = _szName;
 }
 
 void *CPlugin::LoadSymbol(const char *sym) {