IFAKA c1d5f5d562
Add NULL checks after fopen() in ZipFile (#68)
## Problem
Three `fopen()` calls in ZipFile.cpp did not check for NULL before using
the file handle. If files cannot be opened, `fseek`/`fread`/`fclose`
receive NULL and crash.

## Fix
Added NULL checks with appropriate error logging and early returns for
all three locations:
- `getDataOffset()`
- `readFileToMemory()`
- `readFileToStream()`

## Testing
- Builds successfully with `pio run`
- Affects: `lib/ZipFile/ZipFile.cpp`
2025-12-19 23:28:43 +11:00
..
2025-12-03 22:06:45 +11:00
2025-12-03 22:06:45 +11:00
2025-12-03 22:06:45 +11:00

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