host/gop.c: free graphics context in draw() function

==19621== 160 bytes in 1 blocks are definitely lost in loss record 3 of 3
==19621==    at 0x4C2BBAF: malloc (vg_replace_malloc.c:299)
==19621==    by 0x4E5926B: XCreateGC (in /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0)
==19621==    by 0x10F852: draw (in /home/lsartre/perso/efiwrapper/host/efiwrapper_host-eng)
==19621==    by 0x517F4A3: start_thread (pthread_create.c:456)

Signed-off-by: leo <[email protected]>

Author: leo

host/gop.c

@@ -252,6 +252,7 @@ static void *draw(void *arg)
 		XDestroyImage(gop->img);
 		gop->img = NULL;
 	}
+	XFreeGC(gop->display, gop->gc);
 	XUnmapWindow(gop->display, gop->win);
 	XDestroyWindow(gop->display, gop->win);
 	XFree(vi);