[hwasan] Disable vfork code when building w/o interceptors.
Don't define vfork when OMPILER_RT_HWASAN_WITH_INTERCEPTORS=OFF.
#include "sanitizer_common/sanitizer_asm.h"
-#if defined(__linux__)
+#if defined(__linux__) && HWASAN_WITH_INTERCEPTORS
#define COMMON_INTERCEPTOR_SPILL_AREA __hwasan_extra_spill_area
#define COMMON_INTERCEPTOR_HANDLE_VFORK __hwasan_handle_vfork
#include "sanitizer_common/sanitizer_common_interceptors_vfork_aarch64.inc.S"
