* io.c (rb_io_close): call rb_last_status_clear.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36856 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Aug 30 18:21:51 2012  Tanaka Akira  <akr@fsij.org>
+
+	* io.c (rb_io_close): call rb_last_status_clear.
+
 Thu Aug 30 16:17:52 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): check underflow since

io.c

@@ -4020,6 +4020,7 @@ rb_io_close(VALUE io)
     rb_thread_fd_close(fd);
 
     if (fptr->pid) {
+        rb_last_status_clear();
 	rb_syswait(fptr->pid);
 	fptr->pid = 0;
     }