ephyr: Flush the X connection when updating the window title.

Otherwise when you're doing the ctrl-shift mouse grab thing, you
don't know what state you're in until the next rendering occurs.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>

hw/kdrive/ephyr/hostx.c

@@ -174,6 +174,7 @@ hostx_set_win_title(KdScreenInfo *screen, const char *extra_text)
                               8,
                               strlen(buf),
                               buf);
+        xcb_flush(HostX.conn);
     }
 }