[gnome-builder] egg-task-cache: fix sort order for priority heap

[Christian Hergert <chergert src gnome org>]

commit 8a99282cba5cbd319bf35024a6cc049133d9623e
Author: Christian Hergert <christian hergert me>
Date:   Wed May 13 20:17:33 2015 -0700

    egg-task-cache: fix sort order for priority heap
    
    The heap works the opposite of natural number sorting. Highest priority
    wins. So we need to invert our compare to ensure the lowest (soonest)
    cache item will be evicted first.

 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 8508622..f05b4c6 100644
--- a/contrib/egg/egg-task-cache.c
+++ b/contrib/egg/egg-task-cache.c
@@ -182,7 +182,7 @@ cache_item_compare_evict_at (gconstpointer a,
   const CacheItem *ci1 = a;
   const CacheItem *ci2 = b;
 
-  return ci1->evict_at - ci2->evict_at;
+  return ci2->evict_at - ci1->evict_at;
 }
 
 static CacheItem *