Using 2.2.0, crashing on HPDF_Free() after reading invalid png file

[dalgopower]

I have a several PNG files that libharu fails to load.

One of them (crash.png) causes a crash.
After calling

...
HPDF_Image image = HPDF_LoadPngImageFromFile(pdf, filepath);

if(image == 0)
{
HPDF_Free(pdf); // crash here!!!
}

...

The other two files (fail_to_load1.png, fail_to_load2.png) do not crash when 'HPDF_Free()' is call.

p.s I have no problem opening and seeing these three files using image viewer applications, or Photoshop.

--- crash1.png---

--- fail_to_load1.png---

--- fail_to_load2.png---