[Bug-apl] Crash when using the new )COPY command

[Elias Mårtenson]

I trued to )COPY the attached foo.apl file, and it crashed with the
following trace:

*      )copy /home/emartenson/foo.apl*


====================================================
SEGMENTATION FAULT

----------------------------------------
-- Stack trace at main.cc:121
----------------------------------------
0x7fd108b4ab05 __libc_start_main
0x434ca5  main
0x523cbd   Workspace::immediate_execution(bool)
0x461d4d    Command::process_line()
0x461132     Command::process_line(UCS_string&)
0x52929c      Workspace::copy_WS(std::ostream&, std::vector<UCS_string,
std::allocator<UCS_string> >&, bool)
0x4624ba       std::vector<UCS_string, std::allocator<UCS_string>
>::erase(__gnu_cxx::__normal_iterator<UCS_string*, std::vector<UCS_string,
std::allocator<UCS_string> > >)
0x7fd108ba5624        cfree
0x7fd10aba2880
0x47888a
========================================
====================================================

Regards,
Elias

foo.apl
Description: Binary data