[gnome-builder] util: add gb_str_equal0() macro

[Christian Hergert <chergert src gnome org>]

commit d2386e358779fd5798b9180df82a8d9a24bd6c7b
Author: Christian Hergert <christian hergert me>
Date:   Sun Oct 12 21:01:02 2014 -0400

    util: add gb_str_equal0() macro
    
    This is convenience so that we can check if two strings are equal, where
    NULL == NULL should also be considered equal.

 src/util/gb-string.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/util/gb-string.h b/src/util/gb-string.h
index c5de323..eb27fc5 100644
--- a/src/util/gb-string.h
+++ b/src/util/gb-string.h
@@ -25,6 +25,8 @@ G_BEGIN_DECLS
 
 #define gb_str_empty(s)  (!*(s))
 #define gb_str_empty0(s) (!(s) || gb_str_empty(s))
+#define gb_str_equal0(s1,s2) \
+  (((s1) == (s2)) || ((s1) && (s2) && g_str_equal(s1,s2)))
 
 G_END_DECLS