encoding/base32: Use consistent allocator and add proper cleanup

Fix memory handling throughout base32 package:
- Make padding map package-level constant (to avoid repeated allocs)
- Use passed allocator in encode's make() call
- Add defer delete for allocated memory in encode
- Add proper cleanup in test cases
- Fix memory cleanup of output buffers

The changes ensure consistent allocator usage and cleanup in both
implementation and tests.

0 files changed, 0 insertions, 0 deletions