stb_image.h needs "#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PNM)"

[ghesketh]

Describe the bug
build fails if STBI_NO_PNG and STBI_NO_PSD are defined but STBI_NO_PNM is not defined

lines 1798 and 1807 of stb_image.h:
#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD)

stbi__pnm_load() uses stbi__convert_format16() and stbi__convert_format16() uses stbi__compute_y_16()

To Reproduce
#ifndef STBI_NO_PNG
#define STBI_NO_PNG
#endif

#ifdef STBI_NO_PNM
#undef STBI_NO_PNM
#endif

#ifndef STBI_NO_PSD
#define STBI_NO_PSD
#endif

Expected behavior
allow PNM support without PNG and PSD support

Screenshots
n/a

[agouguai]

Maybe you can try the following code;

#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && !defined(STBI_NO_PNM) replace #if defined(STBI_NO_PNG) && defined(STBI_NO_PSD