Only get xrandr extension data if xrandr is supported.

[spectrwm] / spectrwm.c

diff --git a/spectrwm.c b/spectrwm.c
index 0be0227de633db0e727adaf0d87ee447a8093eca..ace7c52793e4a161bc27457348861a699e0b1211 100644 (file)
--- a/spectrwm.c
+++ b/spectrwm.c
@@ -7695,12 +7695,15 @@ setup_screens(void)
        c = xcb_randr_query_version(conn, 1, 1);
        r = xcb_randr_query_version_reply(conn, c, NULL);
        if (r) {
-               if (r->major_version >= 1)
-                       xrandr_support = 1;
+               if (r->major_version >= 1) {
+                       qep = xcb_get_extension_data(conn, &xcb_randr_id);
+                       if (qep) {
+                               xrandr_support = 1;
+                               xrandr_eventbase = qep->first_event;
+                       }
+               }
                free(r);
        }
-       qep = xcb_get_extension_data(conn, &xcb_randr_id);
-       xrandr_eventbase = qep->first_event;
 
        cursor_font = xcb_generate_id(conn);
        xcb_open_font(conn, cursor_font, strlen("cursor"), "cursor");