* io.c (rb_f_syscall): reduce warning: "HAVE___SYSCALL" is not defined.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31272 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Apr 14 16:01:45 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
+
+	* io.c (rb_f_syscall): reduce warning: "HAVE___SYSCALL" is not defined.
+
 Thu Apr 14 00:41:09 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
 
 	* thread.c (thread_fd_close_i): IOError exception should be assigned

io.c

@@ -7853,7 +7853,7 @@ rb_f_syscall(int argc, VALUE *argv)
 #else
     VALUE arg[8];
 #endif
-#if SIZEOF_VOIDP == 8 && HAVE___SYSCALL && SIZEOF_INT != 8 /* mainly *BSD */
+#if SIZEOF_VOIDP == 8 && defined(HAVE___SYSCALL) && SIZEOF_INT != 8 /* mainly *BSD */
 # define SYSCALL __syscall
 # define NUM2SYSCALLID(x) NUM2LONG(x)
 # define RETVAL2NUM(x) LONG2NUM(x)