b2b_entities: fix cherry-pick merge in previous commit

(cherry picked from commit 7898931)

modules/b2b_entities/dlg.c

@@ -1066,7 +1066,7 @@ int b2b_prescript_f(struct sip_msg *msg, void *uparam)
 				}
 				else
 					LM_DBG("Error when creating tm transaction\n");
-				B2BE_LOCK_RELEASE(table, hash_index);
+				lock_release(&table[hash_index].lock);
 				return SCB_DROP_MSG;
 			}
 			tm_tran = tmb.t_gett();