[src] Simplify conditional expression that would always be false.

src/generator.cs

@@ -1416,7 +1416,7 @@ public partial class Generator : IMemberGatherer {
 			var arrRetType = arrIsNullable ? nullableElementType : retType.GetElementType ();
 			var valueFetcher = string.Empty;
 			if (arrType == TypeManager.NSString)
-				append = $"ptr => {{\n\tusing (var str = Runtime.GetNSObject<NSString> (ptr)) {{\n\t\treturn {FormatType (arrRetType.DeclaringType, arrRetType)}Extensions.{(isNullable ? "GetNullableValue" : "GetValue")} (str);\n\t}}\n}}";
+				append = $"ptr => {{\n\tusing (var str = Runtime.GetNSObject<NSString> (ptr)) {{\n\t\treturn {FormatType (arrRetType.DeclaringType, arrRetType)}Extensions.GetValue (str);\n\t}}\n}}";
 			else if (arrType == TypeManager.NSNumber) {
 				if (NSNumberReturnMap.TryGetValue (arrRetType, out valueFetcher) || arrRetType.IsEnum) {
 					var getterStr = string.Format ("{0}{1}", arrIsNullable ? "?" : string.Empty, arrRetType.IsEnum ? ".Int32Value" : valueFetcher);