secur32: Fix heap error.

dlls/secur32/dispatcher.c

@@ -264,7 +264,6 @@ void cleanup_helper(PNegoHelper helper)
       
     HeapFree(GetProcessHeap(), 0, helper->password);
     HeapFree(GetProcessHeap(), 0, helper->com_buf);
-    HeapFree(GetProcessHeap(), 0, helper->session_key);
 
     /* closing stdin will terminate ntlm_auth */
     close(helper->pipe_out);

dlls/secur32/ntlm.c

@@ -1240,6 +1240,7 @@ static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
         PNegoHelper helper = (PNegoHelper) phCredential->dwLower;
         phCredential->dwUpper = 0;
         phCredential->dwLower = 0;
+        HeapFree(GetProcessHeap(), 0, helper->session_key);
         cleanup_helper(helper);
         ret = SEC_E_OK;
     }