parse.y: clear lex_strterm

* parse.y (parser_heredoc_restore): clear lex_strterm always to get
  rid of marking recycled node.  this bug is revealed by r41372 with
  GC.stress=true.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41378 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/parse.y b/parse.y
index d6a8a0374c..c69556f70e 100644
--- a/parse.y
+++ b/parse.y
@@ -6345,6 +6345,7 @@ parser_heredoc_restore(struct parser_params *parser, NODE *here)
 {
     VALUE line;
 
+    lex_strterm = 0;
     line = here->nd_orig;
     lex_lastline = line;
     lex_pbeg = RSTRING_PTR(line);
@@ -6419,7 +6420,6 @@ parser_here_document(struct parser_params *parser, NODE *here)
 #endif
       restore:
 	heredoc_restore(lex_strterm);
-	lex_strterm = 0;
 	return 0;
     }
     if (was_bol() && whole_match_p(eos, len, indent)) {