merge revision(s) 59763: [Backport #13874]
string.c: fix false coderange * string.c (rb_enc_str_scrub): enc can differ from the actual encoding of the string, the cached coderange is useless then. [ruby-core:82674] [Bug #13874]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@59883 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 59763: [Backport #13874]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@59883 b2dd03c8-39d4-4d8f-98ff-823fe69b080e