Fixed binding problem with string vector in NativeLibrary.

Re-generated the bindings.

src/CppParser/AST.h

@@ -25,6 +25,11 @@
     type get##name (unsigned i) { return name[i]; } \
     unsigned get##name##Count () { return name.size(); }
 
+#define VECTOR_STRING(name) \
+    std::vector<std::string> name; \
+    const char* get##name (unsigned i) { return name[i].c_str(); } \
+    unsigned get##name##Count () { return name.size(); }
+
 #define STRING(name) \
     std::string name; \
     const char* get##name() { return name.c_str(); } \
@@ -614,7 +619,7 @@ struct CS_API TranslationUnit : public Namespace
 struct CS_API NativeLibrary
 {
     STRING(FileName)
-    VECTOR(std::string, Symbols)
+    VECTOR_STRING(Symbols)
 };
 
 struct CS_API ASTContext

src/CppParser/Bindings/CLI/AST.cpp

@@ -2501,6 +2501,7 @@ CppSharp::Parser::AST::NativeLibrary::NativeLibrary(System::IntPtr native)
 System::String^ CppSharp::Parser::AST::NativeLibrary::getSymbols(unsigned int i)
 {
     auto __ret = ((::CppSharp::CppParser::AST::NativeLibrary*)NativePtr)->getSymbols(i);
+    if (__ret == nullptr) return nullptr;
     return clix::marshalString<clix::E_UTF8>(__ret);
 }
 

src/CppParser/Bindings/CSharp/AST.cs

@@ -5820,6 +5820,11 @@ namespace CppSharp
                         EntryPoint="??0NativeLibrary@AST@CppParser@CppSharp@@QAE@ABU0123@@Z")]
                     internal static extern global::System.IntPtr NativeLibrary_2(global::System.IntPtr instance, global::System.IntPtr _0);
 
+                    [SuppressUnmanagedCodeSecurity]
+                    [DllImport("CppSharp.CppParser.dll", CallingConvention = global::System.Runtime.InteropServices.CallingConvention.ThisCall,
+                        EntryPoint="?getSymbols@NativeLibrary@AST@CppParser@CppSharp@@QAEPBDI@Z")]
+                    internal static extern global::System.IntPtr getSymbols_0(global::System.IntPtr instance, uint i);
+
                     [SuppressUnmanagedCodeSecurity]
                     [DllImport("CppSharp.CppParser.dll", CallingConvention = global::System.Runtime.InteropServices.CallingConvention.ThisCall,
                         EntryPoint="?getFileName@NativeLibrary@AST@CppParser@CppSharp@@QAEPBDXZ")]
@@ -5883,6 +5888,13 @@ namespace CppSharp
                     Marshal.FreeHGlobal(__Instance);
                 }
 
+                public string getSymbols(uint i)
+                {
+                    var __ret = Internal.getSymbols_0(__Instance, i);
+                    if (__ret == global::System.IntPtr.Zero) return null;
+                    return Marshal.PtrToStringAnsi(__ret);
+                }
+
                 public string FileName
                 {
                     get