Input events cache: use the new mechanism to reuse eo objects.

src/lib/evas/canvas/efl_input_pointer.c

@@ -34,6 +34,7 @@ _del_hook(Eo *evt)
              efl_ref(evt);
              efl_parent_set(evt, NULL);
           }
+        efl_reuse(evt);
         s_cached_event = evt;
      }
    else