[PATCH] Cygwin: pty: Prevent meaningless ResizePseudoConsole() calls.

[Takashi Yano via Cygwin-patches]

- This patch prevents to call ResizePseudoConsole() unless the pty
  is resized.
---
 winsup/cygwin/fhandler_tty.cc | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index f29a2c214..b091765b3 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -2615,18 +2615,18 @@ fhandler_pty_master::ioctl (unsigned int cmd, void *arg)
       *(struct winsize *) arg = get_ttyp ()->winsize;
       break;
     case TIOCSWINSZ:
-      /* FIXME: Pseudo console can be accessed via its handle
-        only in the process which created it. What else can we do? */
-      if (get_pseudo_console () && get_ttyp ()->master_pid == myself->pid)
-       {
-         COORD size;
-         size.X = ((struct winsize *) arg)->ws_col;
-         size.Y = ((struct winsize *) arg)->ws_row;
-         ResizePseudoConsole (get_pseudo_console (), size);
-       }
       if (get_ttyp ()->winsize.ws_row != ((struct winsize *) arg)->ws_row
          || get_ttyp ()->winsize.ws_col != ((struct winsize *) arg)->ws_col)
        {
+         /* FIXME: Pseudo console can be accessed via its handle
+            only in the process which created it. What else can we do? */
+         if (get_pseudo_console () && get_ttyp ()->master_pid == myself->pid)
+           {
+             COORD size;
+             size.X = ((struct winsize *) arg)->ws_col;
+             size.Y = ((struct winsize *) arg)->ws_row;
+             ResizePseudoConsole (get_pseudo_console (), size);
+           }
          get_ttyp ()->winsize = *(struct winsize *) arg;
          get_ttyp ()->kill_pgrp (SIGWINCH);
        }
-- 
2.26.2