[dconf-editor] Test something against The crash.

[Arnaud Bonatti <arnaudb src gnome org>]

commit e45a5762e3c6af22ff5e689db712206dbbd3a7bf
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Thu Dec 14 09:22:56 2017 +0100

    Test something against The crash.

 editor/meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/editor/meson.build b/editor/meson.build
index 59cbae4..54f82b4 100644
--- a/editor/meson.build
+++ b/editor/meson.build
@@ -118,7 +118,7 @@ cflags = [
   '-DVERSION="@0@"'.format(dconf_editor_version),
   '-DLOCALEDIR="@0@"'.format(dconf_editor_localedir),
   '-DGETTEXT_PACKAGE="@0@"'.format(dconf_editor_gettext),
-  '-DG_SETTINGS_ENABLE_BACKEND=1',
+  '-DG_SETTINGS_ENABLE_BACKEND=1', '-DGIO_COMPILATION=1',
   '-w'
 ]