Fix potential double free (cid #1047496 and #1047497)

(cherry picked from commit 873c7e91207545aeaba931143c4e8d1de0640813)
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Conflicts:
	modules/access/directory.c

modules/access/directory.c

@@ -283,8 +283,6 @@ block_t *DirBlock (access_t *p_access)
                 goto fatal;
 
             block_t *block = block_heap_Alloc (footer, footer, len);
-            if (unlikely(block == NULL))
-                free (footer);
             p_access->info.b_eof = true;
             return block;
         }
@@ -436,10 +434,7 @@ notdir:
 
     block_t *block = block_heap_Alloc (entry, entry, len);
     if (unlikely(block == NULL))
-    {
-        free (entry);
         goto fatal;
-    }
     return block;
 
 fatal: