io.c: use RB_INTEGER_TYPE_P

* io.c (fptr_finalize): use dedicated macro RB_INTEGER_TYPE_P.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56352 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Oct  6 09:19:21 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* io.c (fptr_finalize): use dedicated macro RB_INTEGER_TYPE_P.
+
 Wed Oct  5 18:02:44 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
 
 	* lib/net/http/response.rb: Improve document readability.

io.c

@@ -4292,14 +4292,10 @@ fptr_finalize(rb_io_t *fptr, int noraise)
     }
 
     if (!NIL_P(err) && !noraise) {
-        switch (TYPE(err)) {
-          case T_FIXNUM:
-          case T_BIGNUM:
+	if (RB_INTEGER_TYPE_P(err))
 	    rb_syserr_fail_path(NUM2INT(err), fptr->pathv);
-
-          default:
-            rb_exc_raise(err);
-        }
+	else
+	    rb_exc_raise(err);
     }
     free_io_buffer(&fptr->rbuf);
     free_io_buffer(&fptr->wbuf);