[gjs/meson.msvc] meson.build: Fix introspection builds on MSVC

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

commit c3946f2d0daed0baf443ff19134fc2ef9863baa5
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Oct 25 16:46:52 2019 +0800

    meson.build: Fix introspection builds on MSVC
    
    Instead of defining G_LOG_DOMAIN globally, define it only when building
    libgjs and gjs-console, as the quotes in there can cause grief and we
    don't really need it for the introspection dumper program.

 meson.build | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/meson.build b/meson.build
index 329a8c35..4f2fe275 100644
--- a/meson.build
+++ b/meson.build
@@ -10,8 +10,6 @@ pkg = import('pkgconfig')
 
 top_include = include_directories('.')
 
-add_project_arguments('-DG_LOG_DOMAIN="Gjs"', language: ['c', 'cpp'])
-
 ### Check for conflicting build options ########################################
 
 if get_option('systemtap') and not get_option('dtrace')
@@ -509,7 +507,7 @@ else
     endif
 endif
 
-extra_libgjs_cpp_args = []
+extra_libgjs_cpp_args = ['-DG_LOG_DOMAIN="Gjs"']
 if host_machine.system() == 'windows'
     # We need these defines to build properly for Windows
     extra_libgjs_cpp_args += ['-DWIN32', '-DXP_WIN']