Added w3m v0.8.3 patch (#12)

Reviewed-on: #12

x.c

@@ -2076,6 +2076,8 @@ xsettitle(char *p)
 int
 xstartdraw(void)
 {
+	if (IS_SET(MODE_VISIBLE))
+		XCopyArea(xw.dpy, xw.win, xw.buf, dc.gc, 0, 0, win.w, win.h, 0, 0);
 	return IS_SET(MODE_VISIBLE);
 }