重构key keeper创建keyring的代码。修复除 #97 外的valgrind definitely lost。

plugin/business/pangu-http/src/pangu_web_cache.cpp

@@ -886,7 +886,6 @@ static void cache_query_obj_on_succ(future_result_t * result, void * user)
 			//last call.	
 			ATOMIC_DEC(&(ctx->ref_handle->stat_val[STAT_CACHE_READING]));	
 			promise_dettach_ctx(p);		
-			promise_finish(p);
 			last_call=1;
 			break;
 		case RESULT_TYPE_BODY:
@@ -896,8 +895,11 @@ static void cache_query_obj_on_succ(future_result_t * result, void * user)
 			break;
 	}
 	promise_success(p, ctx);
-	if(last_call) 	cache_query_ctx_free_cb(ctx);
-
+	if(last_call)
+	{
+		cache_query_ctx_free_cb(ctx);	
+		promise_finish(p);
+	}
 	return;
 }
 static void cache_query_obj_on_fail(enum e_future_error err, const char * what, void * user)

plugin/protocol/http/src/http_half.cpp

@@ -801,7 +801,7 @@ struct http_half_private * hf_private_create(tfe_http_direction ht_dir, short ma
 	hf_private->hf_public.ops = &__http_half_ops;
 
 	/* PRIVATE */
-	hf_private->parse_object = (struct http_parser *) malloc(sizeof(struct http_parser));
+	hf_private->parse_object = ALLOC(struct http_parser, 1);
 	assert(hf_private->parse_object != NULL);
 
 	if (ht_dir == TFE_HTTP_REQUEST)