volatile errinfo

* eval_jump.c (rb_exec_end_proc): need volatile to prevent from
  setjmp/longjmp.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35085 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

eval_jump.c

@@ -100,7 +100,7 @@ rb_exec_end_proc(void)
     int status;
     volatile int safe = rb_safe_level();
     rb_thread_t *th = GET_THREAD();
-    VALUE errinfo = th->errinfo;
+    volatile VALUE errinfo = th->errinfo;
 
     while (ephemeral_end_procs) {
 	link = ephemeral_end_procs;