Don't create list unless needed

meum · Liudmila Molkova · web-flow · commit 9b63236051c4 · 2025-01-31T08:46:12.000+01:00
Co-authored-by: Liudmila Molkova &lt;limolkova@microsoft.com&gt;
diff --git a/projects/RabbitMQ.Client/Impl/RabbitMQActivitySource.cs b/projects/RabbitMQ.Client/Impl/RabbitMQActivitySource.cs
@@ -172,9 +172,10 @@ public static bool UseRoutingKeyAsOperationName
         private static Activity? StartLinkedRabbitMQActivity(this ActivitySource source, string name, ActivityKind kind,
             ActivityContext linkedContext = default, ActivityContext parentContext = default)
         {
-            var links = new List<ActivityLink>();
+            List<ActivityLink> links = null;
             if (linkedContext != default)
             {
+                links = new List<ActivityLink>();
                 links.Add(new ActivityLink(linkedContext));
             }
             return source.CreateActivity(name, kind, parentContext: parentContext,

Original file line number	Diff line number	Diff line change
`@@ -172,9 +172,10 @@ public static bool UseRoutingKeyAsOperationName`
`172`	`172`	`private static Activity? StartLinkedRabbitMQActivity(this ActivitySource source, string name, ActivityKind kind,`
`173`	`173`	`ActivityContext linkedContext = default, ActivityContext parentContext = default)`
`174`	`174`	`{`
`175`		`- var links = new List<ActivityLink>();`
	`175`	`+ List<ActivityLink> links = null;`
`176`	`176`	`if (linkedContext != default)`
`177`	`177`	`{`
	`178`	`+ links = new List<ActivityLink>();`
`178`	`179`	`links.Add(new ActivityLink(linkedContext));`
`179`	`180`	`}`
`180`	`181`	`return source.CreateActivity(name, kind, parentContext: parentContext,`