parse.y: fix memory leak

* parse.y (parser_free): fix memory leak at syntax error when
  warn-indent is enabled.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51981 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Sep 30 01:34:34 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (parser_free): fix memory leak at syntax error when
+	  warn-indent is enabled.
+
 Tue Sep 29 22:27:50 2015  Benoit Daloze  <eregontp@gmail.com>
 
 	* parse.y: fix minor typo. [ci skip][fix GH-1038].

parse.y

@@ -10630,6 +10630,15 @@ parser_free(void *ptr)
 	prev = local->prev;
 	xfree(local);
     }
+#ifndef RIPPER
+    {
+	token_info *ptinfo;
+	while ((ptinfo = parser->token_info) != 0) {
+	    parser->token_info = ptinfo->next;
+	    xfree(ptinfo);
+	}
+    }
+#endif
     xfree(ptr);
 }