Update src/signals-unix.c

Author: vtjnash

src/signals-unix.c

@@ -88,7 +88,7 @@ __attribute__((naked)) static void fake_stack_pop(void)
         "  .cfi_offset %esp, 4\n" // previous value of %esp at CFA
         "  nop\n"
     );
-#elif (defined(_OS_LINUX_) || defined(_OS_DARWIN_)) && defined(_CPU_AARCH64_)
+#elif defined(_OS_DARWIN_) && defined(_CPU_AARCH64_)
     __asm__ volatile (
         "  .cfi_signal_frame\n"
         "  .cfi_def_cfa sp, 0\n" // use sp as fp here