Fix exception when refreshing oauth2 token

VIZRTINT\pew · VIZRTINT\pew · commit ec0f472fe208 · 2024-09-27T14:09:02.000+02:00
diff --git a/projects/RabbitMQ.Client.OAuth2/OAuth2Client.cs b/projects/RabbitMQ.Client.OAuth2/OAuth2Client.cs
@@ -309,7 +309,7 @@ private Dictionary<string, string> BuildRefreshParameters(IToken token)
             Dictionary<string, string> dict = BuildRequestParameters();
             dict[GRANT_TYPE] = REFRESH_TOKEN;
 
-            if (_scope != null)
+            if (_scope != null && !dict.ContainsKey(SCOPE))
             {
                 dict.Add(SCOPE, _scope);
             }

Original file line number	Diff line number	Diff line change
`@@ -309,7 +309,7 @@ private Dictionary<string, string> BuildRefreshParameters(IToken token)`
`309`	`309`	`Dictionary<string, string> dict = BuildRequestParameters();`
`310`	`310`	`dict[GRANT_TYPE] = REFRESH_TOKEN;`
`311`	`311`
`312`		`- if (_scope != null)`
	`312`	`+ if (_scope != null && !dict.ContainsKey(SCOPE))`
`313`	`313`	`{`
`314`	`314`	`dict.Add(SCOPE, _scope);`
`315`	`315`	`}`