evas_xcb_outbuf: fix memory leak

Summary: This fixes a leak in the xcb engine where the Outbuf_Region
was not being freed.

@fix

Signed-off-by: kabeer khan <kabeer.khan@samsung.com>

Reviewers: devilhorns

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D1750

src/modules/evas/engines/software_x11/evas_xcb_outbuf.c

@@ -295,6 +295,7 @@ evas_software_xcb_outbuf_new_region_for_update(Outbuf *buf, int x, int y, int w,
                   _xcbob_sync(buf->priv.x11.xcb.conn);
                   buf->priv.synced = EINA_TRUE;
                }
+             free(obr);
              return buf->priv.onebuf;
           }
         obr->x = 0;