* parse.y (yycompile): clear ruby_eval_tree_begin too before parse.
	* parse.y (yycompile): clear ruby_eval_tree_begin if parse failed.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@17186 b2dd03c8-39d4-4d8f-98ff-823fe69b080e