C#: Fix test settings.

calumgrant · calumgrant · commit 1b264f73b4b8 · 2019-05-29T08:15:51.000+01:00
diff --git a/csharp/ql/test/library-tests/csharp8/AsyncStreams.cs b/csharp/ql/test/library-tests/csharp8/AsyncStreams.cs
@@ -1,4 +1,4 @@
-// semmle-extractor-options: /r:System.Threading.Tasks.dll /r:System.Threading.Tasks.Extensions.dll /r:netstandard.dll
+// semmle-extractor-options: /r:System.Threading.Tasks.dll /r:System.Threading.Tasks.Extensions.dll /r:netstandard.dll /langversion:preview
 
 using System;
 using System.Collections.Generic;

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-// semmle-extractor-options: /r:System.Threading.Tasks.dll /r:System.Threading.Tasks.Extensions.dll /r:netstandard.dll`
	`1`	`+// semmle-extractor-options: /r:System.Threading.Tasks.dll /r:System.Threading.Tasks.Extensions.dll /r:netstandard.dll /langversion:preview`
`2`	`2`
`3`	`3`	`using System;`
`4`	`4`	`using System.Collections.Generic;`