Optimize game.getDB.

(cherry picked from commit 9f72aebbbd86dff2fe99f683dedb592e1c78b810)

game/game.js

@@ -38169,31 +38169,29 @@
 				return;
 			}
 			lib.status.reload++;
-			var store=lib.db.transaction([type],'readwrite').objectStore(type);
+			const store=lib.db.transaction([type],'readwrite').objectStore(type);
 			if(id){
-				store.get(id).onsuccess=function(e){
+				store.get(id).onsuccess=e=>{
 					_status.dburgent=true;
 					callback(e.target.result);
 					delete _status.dburgent;
 					game.reload2();
 				};
+				return;
 			}
-			else{
-				var obj={};
-				store.openCursor().onsuccess=function(e){
-					var cursor=e.target.result;
+			const obj={};
+			store.openCursor().onsuccess=e=>{
+				const cursor=e.target.result;
 				if(cursor){
 					obj[cursor.key]=cursor.value;
 					cursor.continue();
+					return;
 				}
-					else{
 				_status.dburgent=true;
 				callback(obj);
 				delete _status.dburgent;
 				game.reload2();
 			}
-				}
-			}
 		},
 		deleteDB:function(type,id,callback){
 			if(!lib.db){