string.c (rb_str_justify): use RB_GC_GUARD
See doc/extension.rdoc for justification using RB_GC_GUARD instead of volatile.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51011 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
string.c (rb_str_justify): use RB_GC_GUARD
See doc/extension.rdoc for justification using RB_GC_GUARD instead
of volatile.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51011 b2dd03c8-39d4-4d8f-98ff-823fe69b080e