Incorrect marshalling of native object to managed

[UnityAlex]

ArucoUnity/Assets/ArucoUnity/Scripts/Plugins/Cv/Mat.cs

Line 131 in 757f546

get { return au_cv_Mat_getData_uchar(CppPtr); }

In Mat's DataByte accessor the native uchar* object is being directly assigned/returned as a byte[] without marshalling it as a managed object first. This can cause issues such as this: https://issuetracker.unity3d.com/issues/crash-while-inspecting-byteslist-values-of-a-dictionary-in-vs-debugger-when-using-arucounity-plugin

I was able to work around the crash by doing this:

[DllImport("ArucoUnityPlugin")]
      static extern IntPtr au_cv_Mat_getData_uchar(IntPtr mat);

      public byte[] DataByte
      {
        get
        {
          byte[] bytes = new byte[Total()];
          IntPtr inputBuffer = au_cv_Mat_getData_uchar(CppPtr);
          Marshal.Copy(inputBuffer, bytes, 0, (int)Total());
          return bytes;
        }
        set { au_cv_Mat_setData_uchar(CppPtr, value); }
      }

Hope this helps! Thanks!