[PATCH] hcache fixes for upstream

[Thomas Glanzmann <sithglan@xxxxxxxxxxxxxxxxxxxx>]

Hello TLR,
this is a fix for hcache.c infrastructure which is about wrongly
calculate unique id. Please apply.

Greetings,
        Thomas

===== hcache.c 1.5 vs edited =====
--- 1.5/hcache.c        2005-02-01 07:13:28 +01:00
+++ edited/hcache.c     2005-02-03 20:12:18 +01:00
@@ -678,7 +678,7 @@
   safe_strcat(path, sizeof (path), filename);
 
   key.dptr = path;
-  key.dsize = keylen(path);
+  key.dsize = strlen(h->folder) + keylen(path + strlen(h->folder));
 
   data = gdbm_fetch(h->db, key);
 
@@ -709,7 +709,7 @@
   safe_strcat(path, sizeof (path), filename);
 
   key.dptr = path;
-  key.dsize = keylen(path);
+  key.dsize = strlen(h->folder) + keylen(path + strlen(h->folder));
 
   data.dptr = mutt_hcache_dump(db, header, &data.dsize, uid_validity);
 
@@ -735,7 +735,7 @@
   safe_strcat(path, sizeof (path), filename);
 
   key.dptr = path;
-  key.dsize = keylen(path);
+  key.dsize = strlen(h->folder) + keylen(path + strlen(h->folder));
 
   return gdbm_delete(h->db, key);
 }