[PATCH] discard_cache(): discard index, even if no file was mmap()ed

[PATCH] discard_cache(): discard index, even if no file was mmap()ed

[Johannes Schindelin]

Since add_cacheinfo() can be called without a mapped index file,
discard_cache() _has_ to discard the entries, even when
cache_mmap == NULL.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

---

	This fixes 41094b8e, the only showstopper I wrote
	about in my last -recur status report. The index file is
	now the same for -recur and -recursive when trying to recreate 
	41094b8e.

	Happy.

 read-cache.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/read-cache.c b/read-cache.c
index de8f690..3559bdc 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -841,14 +841,14 @@ int discard_cache()
 {
 	int ret;
 
+	active_nr = active_cache_changed = 0;
+	index_file_timestamp = 0;
+	cache_tree_free(&active_cache_tree);
 	if (cache_mmap == NULL)
 		return 0;
 	ret = munmap(cache_mmap, cache_mmap_size);
 	cache_mmap = NULL;
 	cache_mmap_size = 0;
-	active_nr = active_cache_changed = 0;
-	index_file_timestamp = 0;
-	cache_tree_free(&active_cache_tree);
 
 	/* no need to throw away allocated active_cache */
 	return ret;
-- 
1.4.2.rc4.g0d295-dirty