Fix missing cast in signed uint<int comparison.

ICSharpCode.Decompiler/CSharp/ExpressionBuilder.cs

@@ -546,14 +546,15 @@ namespace ICSharpCode.Decompiler.CSharp
 			// attempt comparison without any additional casts
 			var rr = resolver.ResolveBinaryOperator(inst.Kind.ToBinaryOperatorType(), left.ResolveResult, right.ResolveResult)
 				as OperatorResolveResult;
-			if (rr != null && !rr.IsError
-				&& NullableType.GetUnderlyingType(rr.Operands[0].Type).GetSign() == inst.Sign
-				&& NullableType.GetUnderlyingType(rr.Operands[1].Type).GetSign() == inst.Sign)
-			{
+			if (rr != null && !rr.IsError) {
+				IType compUType = NullableType.GetUnderlyingType(rr.Operands[0].Type);
+				if (compUType.GetSign() == inst.Sign && compUType.GetStackType() == inst.InputType) {
 					return new BinaryOperatorExpression(left.Expression, op, right.Expression)
 						.WithILInstruction(inst)
 						.WithRR(rr);
 				}
+			}
+
 			// Ensure the inputs have the correct sign:
 			KnownTypeCode inputType = KnownTypeCode.None;
 			switch (inst.InputType) {