Fix some cases of flicker on MS Windows

* src/w32term.c (w32_read_socket): Fix typo in check before
flipping buffers.

diff --git a/src/w32term.c b/src/w32term.c
index 11675085fccdeee7807e43df3cf49810fb00de17..19786da3a6dc2e4fe313da612c22dac4994bb8fc 100644 (file)
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -5976,7 +5976,7 @@ w32_read_socket (struct terminal *terminal,
 
       if (f && !w32_disable_double_buffering
          && FRAME_OUTPUT_DATA (f)->paint_buffer_dirty
-         && !f->garbaged && ignore_dirty_back_buffer)
+         && !f->garbaged && !ignore_dirty_back_buffer)
        w32_show_back_buffer (f);
     }