ncurses-6.0-20170722 breaks window resizing

[Jeb Rosen]

Arch Linux recently got an update to ncurses that broke window resizing
in weechat, so I bisected the ncurses releases and found that the endwin
state handling in 2017-07-22 was most likely at fault. The _endwin flag
was changed from a boolean to a tristate enum, and most of the checks
were updated to accomodate that, with TRUE becoming ewSuspend and FALSE
becoming ewRunning or ewInitial. However, one check in
ncurses/tty/tty_update.c changed a comparison to TRUE to a comparison to
ewRunning, in the size change handling.

The following change appears to more closely match the original logic,
and does fix weechat for me.


--- ncurses-6.0-20170827/ncurses/tty/tty_update.c    2017-08-27
13:40:17.000000000 -0600
+++ ncurses-6.0-20170827-patch/ncurses/tty/tty_update.c    2017-08-29
10:38:45.602673861 -0600
@@ -831,7 +831,7 @@
     SP_PARM->_fifohold--;

 #if USE_SIZECHANGE
-    if ((SP_PARM->_endwin == ewRunning)
+    if ((SP_PARM->_endwin == ewSuspend)
     || _nc_handle_sigwinch(SP_PARM)) {
     /*
      * This is a transparent extension:  XSI does not address it,

Is this a correct way to handle the change, or is there more to it?