INLINE_SYSCALL_NCS: scope out local vars to avoid conflicts
INLINE_SYSCALL_NCS: scope out local vars to avoid conflicts

The INLINE_SYSCALL_NCS() macro was using "res" and "err" as local variable
names, but this caused conflicts with some code (like clock_getres) whose
arguments were named the same.

libc/sysdeps/linux/common/clock_getres.c: In function 'clock_getres':
libc/sysdeps/linux/common/clock_getres.c:15: warning: 'res' is used uninitialized in this function

Signed-off-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@gentoo.org>

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