[newlib-cygwin] Fix typo in <sys/_stdint.h>

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=4e91600796e9c347d8eb84bf37da7fb20f8503d2

commit 4e91600796e9c347d8eb84bf37da7fb20f8503d2
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Tue Oct 25 07:13:48 2016 +0200

    Fix typo in <sys/_stdint.h>
    
    Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

Diff:
---
 newlib/libc/include/sys/_stdint.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/newlib/libc/include/sys/_stdint.h b/newlib/libc/include/sys/_stdint.h
index a7fe1e4..93746b8 100644
--- a/newlib/libc/include/sys/_stdint.h
+++ b/newlib/libc/include/sys/_stdint.h
@@ -63,7 +63,7 @@ typedef __uint64_t uint64_t ;
 #define __int64_t_defined 1
 #endif /* ___int64_t_defined */
 
-#ifndef INTPTR_T_DECLARED
+#ifndef _INTPTR_T_DECLARED
 typedef __intptr_t intptr_t;
 #define _INTPTR_T_DECLARED
 #endif