[dconf-editor] Revert "Fix build caused by GTK+ dependency", 3.21.3 released

[Arnaud Bonatti <arnaudb src gnome org>]

commit de71fcab16d7ce4d1459e2ff5d144a6bac90dff0
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Jun 21 00:08:49 2016 +0200

    Revert "Fix build caused by GTK+ dependency", 3.21.3 released
    
    This reverts commit c02f7b7183b4f02ad243910c357bc16b5c4fe202.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 855c53d..1e18edc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,7 +32,7 @@ APPSTREAM_XML
 # Dependencies
 DCONF_REQUIRED=0.25.1
 GLIB_REQUIRED=2.46.0
-GTK_REQUIRED=3.21.2
+GTK_REQUIRED=3.21.3
 
 PKG_CHECK_MODULES(DCONF_EDITOR, [
   glib-2.0 >= $GLIB_REQUIRED