C#: Address review comment.

calumgrant · calumgrant · commit e76eb1641a28 · 2019-01-11T16:13:04.000Z
diff --git a/csharp/extractor/Semmle.Extraction/Symbol.cs b/csharp/extractor/Semmle.Extraction/Symbol.cs
@@ -57,7 +57,7 @@ protected void WithDuplicationGuard(System.Action a, IEntity location)
         public override bool Equals(object obj)
         {
             var other = obj as CachedEntity<Initializer>;
-            return other != null && other.GetType() == GetType() && Equals(other.symbol, symbol);
+            return other?.GetType() == GetType() && Equals(other.symbol, symbol);
         }
 
         public abstract TrapStackBehaviour TrapStackBehaviour { get; }

Original file line number	Diff line number	Diff line change
`@@ -57,7 +57,7 @@ protected void WithDuplicationGuard(System.Action a, IEntity location)`
`57`	`57`	`public override bool Equals(object obj)`
`58`	`58`	`{`
`59`	`59`	`var other = obj as CachedEntity<Initializer>;`
`60`		`- return other != null && other.GetType() == GetType() && Equals(other.symbol, symbol);`
	`60`	`+ return other?.GetType() == GetType() && Equals(other.symbol, symbol);`
`61`	`61`	`}`
`62`	`62`
`63`	`63`	`public abstract TrapStackBehaviour TrapStackBehaviour { get; }`