Reads score operation as structure.

Assets/Cryville/Common/Identifier.cs

@@ -11,7 +11,6 @@ namespace Cryville.Common {
 			Key = IdentifierManager.SharedInstance.Request(name);
 		}
 		public override bool Equals(object obj) {
-			if (obj == null && Key == 0) return true;
 			if (obj == null || !(obj is Identifier)) return false;
 			return Equals((Identifier)obj);
 		}
@@ -22,6 +21,7 @@ namespace Cryville.Common {
 			return Key;
 		}
 		public override string ToString() {
+			if (Key == 0) return "";
 			return Name.ToString();
 		}
 		public static implicit operator Identifier(string identifier) {