[gnome-builder] egg-task-cache: Add a missing typecast

[Christian Hergert <chergert src gnome org>]

commit 9564d6100148681c9f723f511e2c71fc2aaa0a66
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Mar 6 18:25:59 2017 +0100

    egg-task-cache: Add a missing typecast
    
    g_clear_pointer expects a GDestroyNotify, and g_hash_table_unref
    doesn't exactly match the type, even though it can be used as such.
    Let's explicitly typecast it, since we are doing so elsewhere.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779660

 contrib/egg/egg-task-cache.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/contrib/egg/egg-task-cache.c b/contrib/egg/egg-task-cache.c
index 0bc4598..d1830cb 100644
--- a/contrib/egg/egg-task-cache.c
+++ b/contrib/egg/egg-task-cache.c
@@ -704,7 +704,7 @@ egg_task_cache_dispose (GObject *object)
       gint64 count;
 
       count = g_hash_table_size (self->in_flight);
-      g_clear_pointer (&self->in_flight, g_hash_table_unref);
+      g_clear_pointer (&self->in_flight, (GDestroyNotify)g_hash_table_unref);
 
       EGG_COUNTER_SUB (in_flight, count);
     }