[gitg] Set log domain for gitg

[Alberto Fanjul <albfan src gnome org>]

commit 1f516e9b4a32ab0b12e5a2dc87bd007a6d2f33b1
Author: Alberto Fanjul <albertofanjul gmail com>
Date:   Tue Apr 23 20:35:38 2019 +0200

    Set log domain for gitg

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index 5d2ab856..f807b56e 100644
--- a/meson.build
+++ b/meson.build
@@ -115,6 +115,7 @@ if gitg_debug
 endif
 
 add_project_arguments(common_flags, language: 'c')
+add_project_arguments(['-DG_LOG_DOMAIN="gitg"'], language: 'c')
 
 # vala compiler flags
 add_project_arguments('--vapidir=' + vapi_dir, language: 'vala')