[committed 2.34, 2.35] string.h: fix __fortified_attr_access macro call [BZ #29162]

[Siddhesh Poyarekar <siddhesh@sourceware.org>]

From: Sergei Trofimovich <slyich@gmail.com>

commit e938c0274 "Don't add access size hints to fortifiable functions"
converted a few '__attr_access ((...))' into '__fortified_attr_access (...)'
calls.

But one of conversions had double parentheses of '__fortified_attr_access (...)'.

Noticed as a gnat6 build failure:

    /<<NIX>>-glibc-2.34-210-dev/include/bits/string_fortified.h:110:50: error: macro "__fortified_attr_access" requires 3 arguments, but only 1 given

The change fixes parentheses.

This is seen when using compilers that do not support
__builtin___stpncpy_chk, e.g. gcc older than 4.7, clang older than 2.6
or some compiler not derived from gcc or clang.

Signed-off-by: Sergei Trofimovich <slyich@gmail.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 5a5f94af0542f9a35aaa7992c18eb4e2403a29b9)
---
 string/bits/string_fortified.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/string/bits/string_fortified.h b/string/bits/string_fortified.h
index 218006c9ba..4e66e0bd1e 100644
--- a/string/bits/string_fortified.h
+++ b/string/bits/string_fortified.h
@@ -107,7 +107,7 @@ __NTH (stpncpy (char *__dest, const char *__src, size_t __n))
 # else
 extern char *__stpncpy_chk (char *__dest, const char *__src, size_t __n,
 			    size_t __destlen) __THROW
-  __fortified_attr_access ((__write_only__, 1, 3))
+  __fortified_attr_access (__write_only__, 1, 3)
   __attr_access ((__read_only__, 2));
 extern char *__REDIRECT_NTH (__stpncpy_alias, (char *__dest, const char *__src,
 					       size_t __n), stpncpy);
-- 
2.35.1