[libdazzle] binding-group: follow style guide

[Christian Hergert <chergert src gnome org>]

commit e0b297d5d1e5c283a4095776b0dcdd1cbd423bdb
Author: Christian Hergert <chergert redhat com>
Date:   Sun Dec 17 16:53:36 2017 -0800

    binding-group: follow style guide
    
    Which is to *always* assign auto locals to NULL.

 src/bindings/dzl-binding-group.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/bindings/dzl-binding-group.c b/src/bindings/dzl-binding-group.c
index c1ff711..7d83cd2 100644
--- a/src/bindings/dzl-binding-group.c
+++ b/src/bindings/dzl-binding-group.c
@@ -119,7 +119,7 @@ dzl_binding_group_connect (DzlBindingGroup *self,
 #ifdef DEBUG_BINDINGS
   {
     GFlagsClass *flags_class;
-    g_autofree gchar *flags_str;
+    g_autofree gchar *flags_str = NULL;
 
     flags_class = g_type_class_ref (G_TYPE_BINDING_FLAGS);
     flags_str = _g_flags_to_string (flags_class,