[glib: 1/2] build: define G_OS_UNIX, not G_OS_WIN32 under cygwin

[Christoph Reiter <creiter src gnome org>]

commit 767e6a4cac9f5c38ed802d2a77ec618ddc89aae9
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Tue May 21 18:54:34 2019 +0200

    build: define G_OS_UNIX, not G_OS_WIN32 under cygwin
    
    This makes glib build under msys2 for me.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index beed3e04a..6db3e8fe6 100644
--- a/meson.build
+++ b/meson.build
@@ -198,7 +198,7 @@ if host_system == 'windows'
   glib_os = '''#define G_OS_WIN32
 #define G_PLATFORM_WIN32'''
 elif host_system == 'cygwin'
-  glib_os = '''#define G_OS_WIN32
+  glib_os = '''#define G_OS_UNIX
 #define G_WITH_CYGWIN'''
 else
   glib_os = '#define G_OS_UNIX'