[PATCH 1/1] ntdll: Check for AT_HWCAP2 definition before using it.

[Zebediah Figura]

From: Zebediah Figura

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54210
---
 dlls/ntdll/unix/signal_x86_64.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c
index 15d1a3539a1..6f02f5c6114 100644
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -2429,7 +2429,9 @@ void signal_init_process(void)
         {
             amd64_thread_data()->fs = fs32_sel = (sel << 3) | 3;
             syscall_flags |= SYSCALL_HAVE_PTHREAD_TEB;
+#ifdef AT_HWCAP2
             if (getauxval( AT_HWCAP2 ) & 2) syscall_flags |= SYSCALL_HAVE_WRFSGSBASE;
+#endif
         }
         else ERR_(seh)( "failed to allocate %%fs selector\n" );
     }