make sure Xdisplay is closed on shutdown

src/keybinds.h

@@ -1,18 +1,17 @@
 #include <X11/Xlib.h>
 #include <iostream>
 #include "X11/keysym.h"
-#include "mesa/util/os_time.h"
 
 double elapsedF2, elapsedF12, elapsedReloadCfg;
 uint64_t last_f2_press, last_f12_press, reload_cfg_press;
 pthread_t f2;
 char *displayid = getenv("DISPLAY");
-Display *dpy = XOpenDisplay(displayid);
+std::unique_ptr<Display, std::function<void(Display*)>> dpy(XOpenDisplay(displayid), [](Display* d) { XCloseDisplay(d); });
 
 bool key_is_pressed(KeySym ks) {
     char keys_return[32];
-    XQueryKeymap(dpy, keys_return);
-    KeyCode kc2 = XKeysymToKeycode(dpy, ks);
+    XQueryKeymap(dpy.get(), keys_return);
+    KeyCode kc2 = XKeysymToKeycode(dpy.get(), ks);
     bool isPressed = !!(keys_return[kc2 >> 3] & (1 << (kc2 & 7)));
     return isPressed;
 }