Fixed generation support for pointers to enums in C#.

Fixes https://github.com/mono/CppSharp/issues/1093.

src/Generator/Generators/CSharp/CSharpTypePrinter.cs

@@ -182,7 +182,7 @@ namespace CppSharp.Generators.CSharp
         public override TypePrinterResult VisitPointerType(PointerType pointer,
             TypeQualifiers quals)
         {
-            if (MarshalKind == MarshalKind.NativeField)
+            if (MarshalKind == MarshalKind.NativeField && !pointer.Pointee.IsEnumType())
                 return IntPtrType;
 
             if (pointer.Pointee is FunctionType)

tests/CSharp/CSharp.cpp

@@ -430,6 +430,14 @@ int TestRenaming::property()
     return 1;
 }
 
+UsesPointerToEnum::UsesPointerToEnum()
+{
+}
+
+void UsesPointerToEnum::hasPointerToEnumInParam(Flags* flag)
+{
+}
+
 UsesPointerToEnumInParamOfVirtual::UsesPointerToEnumInParamOfVirtual()
 {
 }

tests/CSharp/CSharp.h

@@ -298,6 +298,14 @@ enum class Flags
     Flag3 = 4
 };
 
+class DLL_API UsesPointerToEnum
+{
+public:
+    UsesPointerToEnum();
+    Flags* _flags;
+    void hasPointerToEnumInParam(Flags* flag);
+};
+
 class DLL_API UsesPointerToEnumInParamOfVirtual
 {
 public: