[glib] gvariant: Fix typo in previous commit

[Colin Walters <walters src gnome org>]

commit 555c5a63767e3ca988639bf69932a1fc8d017c1b
Author: Colin Walters <walters verbum org>
Date:   Wed Aug 3 11:34:43 2016 -0400

    gvariant: Fix typo in previous commit

 glib/gvariant.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glib/gvariant.c b/glib/gvariant.c
index c311da6..2a5246c 100644
--- a/glib/gvariant.c
+++ b/glib/gvariant.c
@@ -2917,7 +2917,7 @@ struct heap_iter
 #define is_valid_iter(i)        (i != NULL && \
                                  GVSI(i)->magic == GVSI_MAGIC)
 #define is_valid_heap_iter(i)   (is_valid_iter(i) && \
-                                 GGVHI(i)->magic == GVHI_MAGIC)
+                                 GVHI(i)->magic == GVHI_MAGIC)
 
 /**
  * g_variant_iter_new: