x86: Fix build
We should include <sys/syscall.h> for SYS_rt_sigreturn in x86/Gos-linux.c
@@ -26,6 +26,8 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "unwind_i.h"
#include "offsets.h"
+#include <sys/syscall.h>
+
PROTECTED int
unw_is_signal_frame (unw_cursor_t *cursor)
{
