!78 修改Oauth2 凭证式缺少校验scope 问题

Merge pull request !78 from 茉莉/dev

sa-token-plugin/sa-token-oauth2/src/main/java/cn/dev33/satoken/oauth2/logic/SaOAuth2Handle.java

@@ -277,6 +277,9 @@ public class SaOAuth2Handle {
 		String clientSecret = req.getParamNotNull(Param.client_secret);
 		String scope = req.getParam(Param.scope);
 
+		//校验 ClientScope
+		SaOAuth2Util.checkContract(clientId, scope);
+
 		// 校验 ClientSecret
 		SaOAuth2Util.checkClientSecret(clientId, clientSecret);