meson.build: Remove ncurses workaround for OpenBSD

meson.build: Remove ncurses workaround for OpenBSD

OpenBSD 7.5 has upgraded to ncurses 6.4.

Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

meson.build

@@ -1399,7 +1399,7 @@ iconv = not_found
 curses = not_found
 if have_system and get_option('curses').allowed()
   curses_test = '''
-    #if defined(__APPLE__) || defined(__OpenBSD__)
+    #ifdef __APPLE__
     #define _XOPEN_SOURCE_EXTENDED 1
     #endif
     #include <locale.h>

ui/curses.c

@@ -38,7 +38,7 @@
 #include "ui/input.h"
 #include "sysemu/sysemu.h"
 
-#if defined(__APPLE__) || defined(__OpenBSD__)
+#ifdef __APPLE__
 #define _XOPEN_SOURCE_EXTENDED 1
 #endif