readelf memory leaks
This fixes multiple readelf memory leaks:
- The check functions used to validate separate debug info files
opened and read file data but didn't release the memory nor close
the file.
- A string table was being re-read into a buffer, leaking the old
contents.
- Decompressed section contents leaked.
* dwarf.c (check_gnu_debuglink): Always call close_debug_file.
(check_gnu_debugaltlink): Likewise.
* readelf.c (process_section_headers): Don't read string_table
again if we already have it.
(maybe_expand_or_relocate_section): Add decomp_buf param to
return new uncompressed buffer.
(dump_section_as_strings, filedata->string_table): Free any
uncompressed buffer.
(process_file): Call close_debug_file rather than freeing
various filedata components.
2 files changed
