Merge commit 'a9179b5b'

* commit 'a9179b5b':
  configure: Check only for xcb
Merged-by: Michael Niedermayer <michaelni@gmx.at>

configure

@@ -5025,7 +5025,7 @@ enabled xlib &&
     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
 
 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
-    check_pkg_config xcb-event xcb/xcb.h xcb_connect || {
+    check_pkg_config xcb xcb/xcb.h xcb_connect || {
         enabled libxcb && die "ERROR: libxcb not found";
     } && disable x11grab && enable libxcb