Change asm to __asm__ in helpers.c (#6188)

This is an attempt to fix #6177 since according to [this reference][1]
some modes of compilation require `__asm__` instead of `asm`.

[1]: https://en.cppreference.com/w/c/language/asm

crates/runtime/src/helpers.c

@@ -75,7 +75,7 @@ __attribute__((weak, noinline))
 #endif
 void __jit_debug_register_code() {
 #ifndef CFG_TARGET_OS_windows
-  asm("");
+  __asm__("");
 #endif
 }