lib: remove unnecesary else block

The if statement inside the _writeHostObject function
returns an expression which makes the else block unnecessary.

PR-URL: #32644
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>

lib/internal/child_process/serialization.js

@@ -25,10 +25,9 @@ class ChildProcessSerializer extends v8.DefaultSerializer {
     if (isArrayBufferView(object)) {
       this.writeUint32(kArrayBufferViewTag);
       return super._writeHostObject(object);
-    } else {
-      this.writeUint32(kNotArrayBufferViewTag);
-      this.writeValue({ ...object });
     }
+    this.writeUint32(kNotArrayBufferViewTag);
+    this.writeValue({ ...object });
   }
 }