Merge pull request #45 from Z-bin/fixDisplay-dev

Release the resources requested by XOpenDisplay

src/main.cpp

@@ -47,6 +47,9 @@ int main(int argc, char *argv[])
                 QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
         #endif
     }
+    if (NULL != disp) {
+        XCloseDisplay(disp);
+    }
 
     QApplication a(argc, argv);