string.c: consider old terminator
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
string.c: consider old terminator
not use rb_enc_ascget since it depends on the current encoding which
may not be compatible with the new terminator. [Bug #8634]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e