Fix `String.CSharpSignatureType` returning incorrect type when the given type is a pointer or a reference. (#1473)

src/CppParser/Bindings/CSharp/i686-apple-darwin12.4.0/Std.cs

@@ -749,10 +749,10 @@ namespace Std
         public unsafe partial struct __Internalc__N_std_N___1_S_vector____N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C___N_std_N___1_S_allocator__S0_
         {
             [FieldOffset(0)]
-            internal global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C __begin_;
+            internal __IntPtr __begin_;
 
             [FieldOffset(4)]
-            internal global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C __end_;
+            internal __IntPtr __end_;
 
             [FieldOffset(8)]
             internal global::Std.CompressedPair.__Internalc__N_std_N___1_S___compressed_pair_____N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C___N_std_N___1_S_allocator__S1_ __end_cap_;

src/CppParser/Bindings/CSharp/x86_64-apple-darwin12.4.0/Std.cs

@@ -749,10 +749,10 @@ namespace Std
         public unsafe partial struct __Internalc__N_std_N___1_S_vector____N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C___N_std_N___1_S_allocator__S0_
         {
             [FieldOffset(0)]
-            internal global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C __begin_;
+            internal __IntPtr __begin_;
 
             [FieldOffset(8)]
-            internal global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C __end_;
+            internal __IntPtr __end_;
 
             [FieldOffset(16)]
             internal global::Std.CompressedPair.__Internalc__N_std_N___1_S___compressed_pair_____N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C___N_std_N___1_S_allocator__S1_ __end_cap_;

src/Generator/Types/Std/Stdlib.cs

@@ -334,9 +334,11 @@ namespace CppSharp.Types.Std
         {
             if (ctx.Kind == TypePrinterContextKind.Managed)
                 return new CILType(typeof(string));
-            ClassTemplateSpecialization basicString = GetBasicString(ctx.Type);
             var typePrinter = new CSharpTypePrinter(null);
             typePrinter.PushContext(TypePrinterContextKind.Native);
+            if (ctx.Type.Desugar().IsAddress())
+                return new CustomType(typePrinter.IntPtrType);
+            ClassTemplateSpecialization basicString = GetBasicString(ctx.Type);
             return new CustomType(basicString.Visit(typePrinter).Type);
         }