Refactored PNG loading and SFont handling

dogo / oslib

OldSchool Library (OSLib), a 2D graphics library for the PSP.

http://dogo.github.io/oslib/

GNU General Public License v2.0

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Closed dogo closed 1 month ago

dogo commented 1 month ago

Improved memory management and error handling in _loadFromPNG, oslLoadSFontFile, oslDeleteSFont, oslGetSFontTextWidth, and oslSFontDrawText.
Added proper resource cleanup in case of failure.
Used const correctness where appropriate.
Simplified code structure and improved readability.
Added bounds checking and null checks for safer code.