Fix freeaddrinfo(), which did not match allocation in JS. fixes #16081

Author: kripken

system/lib/libc/musl/src/network/freeaddrinfo.c

@@ -6,11 +6,19 @@
 
 void freeaddrinfo(struct addrinfo *p)
 {
+#if __EMSCRIPTEN__
+	// Emscripten's usage of this structure is very simple: we always allocate
+	// ai_addr, and do not use the linked list aspect at all. There is also no
+	// aliasing with aibuf.
+	free(p->ai_addr);
+	free(p);
+#else
 	size_t cnt;
 	for (cnt=1; p->ai_next; cnt++, p=p->ai_next);
 	struct aibuf *b = (void *)((char *)p - offsetof(struct aibuf, ai));
 	b -= b->slot;
 	LOCK(b->lock);
 	if (!(b->ref -= cnt)) free(b);
 	else UNLOCK(b->lock);
+#endif
 }