Revert "提交修改"

This reverts commit 5750c4fe56.

Assets/Scripts/NBC/Runtime/Plugins/Protobuf-net/Serializers/CharSerializer.cs

@@ -0,0 +1,32 @@
+#if !NO_RUNTIME
+using System;
+
+namespace ProtoBuf.Serializers
+{
+    sealed class CharSerializer : UInt16Serializer
+    {
+        static readonly Type expectedType = typeof(char);
+
+        public CharSerializer(ProtoBuf.Meta.TypeModel model) : base(model)
+        {
+
+        }
+
+        public override Type ExpectedType => expectedType;
+
+        public override void Write(object value, ProtoWriter dest)
+        {
+            ProtoWriter.WriteUInt16((ushort)(char)value, dest);
+        }
+
+        public override object Read(object value, ProtoReader source)
+        {
+            Helpers.DebugAssert(value == null); // since replaces
+            return (char)source.ReadUInt16();
+        }
+
+        // no need for any special IL here; ushort and char are
+        // interchangeable as long as there is no boxing/unboxing
+    }
+}
+#endif