x11: Restore argc/argv saving accidentally removed two commits ago

src/platform/StdXApp.cpp

@@ -110,6 +110,7 @@ bool CStdApp::Init(int argc, char * argv[])
 	g_object_unref(icon);
 #endif
 	// Try to figure out the location of the executable
+	Priv->argc=argc; Priv->argv=argv;
 	static char dir[PATH_MAX];
 	SCopy(argv[0], dir);
 	if (dir[0] != '/')

src/platform/StdXPrivate.h

@@ -170,6 +170,7 @@ public:
 	XIC xic;
 	Bool detectable_autorepeat_supported;
 	CX11Proc X11Proc;
+	int argc; char ** argv;
 };
 
 #endif // INC_STD_X_PRIVATE_H