[ruby-cvs:68022] naruse:r60841 (trunk): explictly skip compressed debug line

[naruse at ruby-lang.org]

naruse	2017-11-19 03:05:39 +0900 (Sun, 19 Nov 2017)

  New Revision: 60841

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60841

  Log:
    explictly skip compressed debug line
    
    To identify the line of backtrace with ease, show the offset address of library.
    You can just find the source filename and the line with
    `addr2line -e libruby.so.2.5.0 0xXXXX`

  Modified files:
    trunk/addr2line.c