input: free the EQ allocated memory on shutdown (#38634)

mieqFini() already does the right thing, but it needs to be called by the
various DDXs and the XTest Extension.

X.Org Bug 38634 <http://bugs.freedesktop.org/show_bug.cgi?id=38634>

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Acked-by: Jeremy Huddleston <jeremyhu@apple.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

hw/xquartz/darwinEvents.c

@@ -371,6 +371,10 @@ Bool DarwinEQInit(void) {
     return TRUE;
 }
 
+Bool DarwinEQFini(void) {
+    mieqFini();
+}
+
 /*
  * ProcessInputEvents
  *  Read and process events from the event queue until it is empty.