Simplify TimeZoneInfo.Equals(object) (dotnet/coreclr#8514)

Equals(TimeZoneInfo) already handles null.

Commit migrated from https://github.com/dotnet/coreclr/commit/6d657999abeef7e5410af28c1273feb133ca6c7d

diff --git a/src/coreclr/src/mscorlib/src/System/TimeZoneInfo.cs b/src/coreclr/src/mscorlib/src/System/TimeZoneInfo.cs
index 85f28ca..5000206 100644 (file)
--- a/src/coreclr/src/mscorlib/src/System/TimeZoneInfo.cs
+++ b/src/coreclr/src/mscorlib/src/System/TimeZoneInfo.cs
@@ -946,11 +946,7 @@ namespace System {
         }
 
         public override bool Equals(object obj) {
-            TimeZoneInfo tzi = obj as TimeZoneInfo;            
-            if (null == tzi) {
-                return false;
-            }            
-            return Equals(tzi);
+            return Equals(obj as TimeZoneInfo);
         }
 
         //