xf86: Disable unused crtc functions when a lease is revoked

This fixes 'non-desktop' displays staying powered on after their lease
has been revoked.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111620
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>

hw/xfree86/modes/xf86RandR12.c

@@ -2226,6 +2226,7 @@ xf86CrtcLeaseTerminated(RRLeasePtr lease)
 {
     int c;
     int o;
+    ScrnInfoPtr scrn = xf86ScreenToScrn(lease->screen);
 
     RRLeaseTerminated(lease);
     /*
@@ -2256,6 +2257,10 @@ xf86CrtcLeaseTerminated(RRLeasePtr lease)
             xf86CrtcCheckReset(crtc);
         }
     }
+
+    /* Power off if necessary */
+    xf86DisableUnusedFunctions(scrn);
+
     RRLeaseFree(lease);
 }