merge revision(s) 55154: [Backport #12418]
* regcomp.c (compile_length_tree): return error code immediately if compile_length_tree raised error [Bug #12418]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 55154: [Backport #12418]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e