[atk/msvc.improvements: 11/11] Visual Studio builds: Use -utf-8 if available

[Chun-wei Fan <fanchunwei src gnome org>]

commit f2add079715187471cd47b1fa6a3a67f2bd6633b
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Jan 15 14:29:56 2020 +0800

    Visual Studio builds: Use -utf-8 if available
    
    This avoids the build erroring out on C4819 (Unicode handling issue in the Visual
    Studio compiler), which notably occurs on Chinese, Korean and Japanese locales.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 6dab01f..b54ce91 100644
--- a/meson.build
+++ b/meson.build
@@ -44,7 +44,7 @@ darwin_versions = ['@0@'.format(current + 1), '@0@.@1@'.format(current + 1, atk_
 add_project_arguments([ '-DG_DISABLE_SINGLE_INCLUDES', '-DATK_DISABLE_SINGLE_INCLUDES' ], language: 'c')
 
 if cc.get_id() == 'msvc'
-  add_project_arguments([ '-FImsvc_recommended_pragmas.h' ], language: 'c')
+  add_project_arguments(cc.get_supported_arguments(['-FImsvc_recommended_pragmas.h', '-utf-8']), language: 
'c')
 endif
 
 # Compiler and linker flags