X11: Fix set not being reset each call to select

src/x11_window.c

@@ -59,16 +59,19 @@ static GLFWbool waitForEvent(double* timeout)
     const int fd = ConnectionNumber(_glfw.x11.display);
     int count = fd + 1;
 
-    FD_ZERO(&fds);
-    FD_SET(fd, &fds);
 #if defined(__linux__)
-    FD_SET(_glfw.linjs.inotify, &fds);
-
-    if (fd < _glfw.linjs.inotify)
+    if (_glfw.linjs.inotify > fd)
         count = _glfw.linjs.inotify + 1;
 #endif
     for (;;)
     {
+        FD_ZERO(&fds);
+        FD_SET(fd, &fds);
+#if defined(__linux__)
+        if (_glfw.linjs.inotify > 0)
+            FD_SET(_glfw.linjs.inotify, &fds);
+#endif
+
         if (timeout)
         {
             const long seconds = (long) *timeout;