[newlib-cygwin] Fix posix_memalign() attributes

[Sebastian Huber <sh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=08eab6396f678cf5e5968acaed0bae9fd129983b

commit 08eab6396f678cf5e5968acaed0bae9fd129983b
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Mon Oct 22 11:23:15 2018 +0200

    Fix posix_memalign() attributes
    
    The malloc, alloc_size and alloc_aligned attributes must be only used in
    case the function returns the pointer to the allocated memory.
    
    See also:
    
    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87683
    
    Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

Diff:
---
 newlib/libc/include/stdlib.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/newlib/libc/include/stdlib.h b/newlib/libc/include/stdlib.h
index 1972be7..9773d36 100644
--- a/newlib/libc/include/stdlib.h
+++ b/newlib/libc/include/stdlib.h
@@ -282,8 +282,8 @@ int	_unsetenv_r (struct _reent *, const char *__string);
 #endif /* !__CYGWIN__ */
 
 #if __POSIX_VISIBLE >= 200112
-int	posix_memalign (void **, size_t, size_t) __malloc_like __nonnull((1))
-	    __alloc_align(2) __alloc_size(3) __result_use_check;
+int	posix_memalign (void **, size_t, size_t) __nonnull((1))
+	    __result_use_check;
 #endif
 
 char *	_dtoa_r (struct _reent *, double, int, int, int *, int*, char**);