[wing] Make it use the structured log by default

[Ignacio Casal Quinteiro <icq src gnome org>]

commit e9ac061b18547064a917fbfe9e78f3183c6aa641
Author: Ignacio Casal Quinteiro <qignacio amazon com>
Date:   Fri Oct 27 16:47:09 2017 +0200

    Make it use the structured log by default

 meson.build |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/meson.build b/meson.build
index b4288a5..d6207ac 100644
--- a/meson.build
+++ b/meson.build
@@ -54,6 +54,8 @@ conf.set('includedir', wing_includedir)
 # Version macros
 conf.set('VERSION', wing_version)
 
+add_project_arguments('-DG_LOG_USE_STRUCTURED=1', language: 'c')
+
 # Compiler flags
 if cc.get_id() == 'msvc'
   # Make MSVC more pedantic, this is a recommended pragma list