bcache: cast to avoid implicit signed/unsigned comparison in bcache_path

diff --git a/bcache.c b/bcache.c
index 04c3b0533d58f572fcda7bc3fdfae68a52f3466a..9ba6a860d7c8e28b5cf19b6985e49df1b0634f8b 100644 (file)
--- a/bcache.c
+++ b/bcache.c
@@ -71,7 +71,7 @@ static int bcache_path(ACCOUNT *account, const char *mailbox,
 
   dprint (3, (debugfile, "bcache_path: rc: %d, path: '%s'\n", len, dst));
 
-  if (len < 0 || len >= dstlen-1)
+  if (len < 0 || (size_t)len >= dstlen-1)
     return -1;
 
   dprint (3, (debugfile, "bcache_path: directory: '%s'\n", dst));