Crashfix with empty mailbox

--HG--
branch : HEAD

diff --git a/src/lib-index/mail-cache.c b/src/lib-index/mail-cache.c
index a806af3d5765d1d0aef7a39dca4873c22bbc503b..be9d60d405b4f6922886546158a66b7aa532b8eb 100644 (file)
--- a/src/lib-index/mail-cache.c
+++ b/src/lib-index/mail-cache.c
@@ -326,7 +326,8 @@ static void mail_cache_update_need_compress(struct mail_cache *cache)
        uoff_t max_del_space;
 
         cont_percentage = hdr->continued_record_count * 100 /
-               cache->index->map->records_count;
+               (cache->index->map->records_count == 0 ? 1 :
+                cache->index->map->records_count);
        if (cont_percentage >= COMPRESS_CONTINUED_PERCENTAGE &&
            hdr->used_file_size >= COMPRESS_MIN_SIZE) {
                /* too many continued rows, compress */