ARM64: fix build due to incomplete ppoll decl

BUG=linux-syscall-support:8
R=anton@chromium.org

Review URL: https://codereview.chromium.org/857593002

git-svn-id: http://linux-syscall-support.googlecode.com/svn/trunk/lss@32 829466d3-f3f5-3ae4-62ad-de35cf9bba21
diff --git a/linux_syscall_support.h b/linux_syscall_support.h
index 1fe0ae8..806df23 100644
--- a/linux_syscall_support.h
+++ b/linux_syscall_support.h
@@ -3944,7 +3944,7 @@
   LSS_INLINE _syscall2(int, pipe2, int *, pipefd, int, flags)
   LSS_INLINE _syscall5(int, ppoll, struct kernel_pollfd *, u,
                        unsigned int, n, const struct kernel_timespec *, t,
-                       const kernel_sigset_t *, sigmask, size_t, s)
+                       const struct kernel_sigset_t *, sigmask, size_t, s)
   LSS_INLINE _syscall4(int, readlinkat, int, d, const char *, p, char *, b,
                        size_t, s)
 #endif