disc: Cdrdao: Handle TOC entries containing junk

[Warepire]

If a TOC contains garbage characters in an optional field rubyripper would throw the following exception:

#<Thread:0x000055d0f6a5a4c0 /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:53 run> terminated with exception (report_on_exception is true):
/usr/lib/rubyripper/disc/scanDiscCdrdao.rb:152:in `block in parseCdrdaoFile': invalid byte sequence in UTF-8 (ArgumentError)
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:145:in `each_line'
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:145:in `parseCdrdaoFile'
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:57:in `block in scanInBackground'
#<Thread:0x000055d0f7328a48 /usr/bin/rrip_gui:410 run> terminated with exception (report_on_exception is true):
/usr/lib/rubyripper/disc/scanDiscCdrdao.rb:152:in `block in parseCdrdaoFile': invalid byte sequence in UTF-8 (ArgumentError)
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:145:in `each_line'
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:145:in `parseCdrdaoFile'
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:57:in `block in scanInBackground'
/usr/lib/rubyripper/disc/scanDiscCdrdao.rb:152:in `block in parseCdrdaoFile': invalid byte sequence in UTF-8 (ArgumentError)
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:145:in `each_line'
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:145:in `parseCdrdaoFile'
    from /usr/lib/rubyripper/disc/scanDiscCdrdao.rb:57:in `block in scanInBackground'

Scan the read toc data for invalid characters and replace them with '?' before trying to line-split it to avoid trying to handle the invalid UTF-8.

---

Bought an old Asian CD that has FILE entries in the TOC containing invalid UTF8 bytes, no idea what encoding they are. TOC attached for reference.

toc.txt

[bleskodev]

Hi, thanks for this fix! Merged!