src: use checked allocations in WASI::New()

PR-URL: #30809
Refs: #30257
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>

Author: cjihrig

src/node_wasi.cc

@@ -133,7 +133,7 @@ void WASI::New(const FunctionCallbackInfo<Value>& args) {
   Local<Array> preopens = args[2].As<Array>();
   CHECK_EQ(preopens->Length() % 2, 0);
   options.preopenc = preopens->Length() / 2;
-  options.preopens = UncheckedCalloc<uvwasi_preopen_t>(options.preopenc);
+  options.preopens = Calloc<uvwasi_preopen_t>(options.preopenc);
   int index = 0;
   for (uint32_t i = 0; i < preopens->Length(); i += 2) {
     auto mapped = preopens->Get(context, i).ToLocalChecked();
@@ -143,7 +143,9 @@ void WASI::New(const FunctionCallbackInfo<Value>& args) {
     node::Utf8Value mapped_path(env->isolate(), mapped);
     node::Utf8Value real_path(env->isolate(), real);
     options.preopens[index].mapped_path = strdup(*mapped_path);
+    CHECK_NOT_NULL(options.preopens[index].mapped_path);
     options.preopens[index].real_path = strdup(*real_path);
+    CHECK_NOT_NULL(options.preopens[index].real_path);
     index++;
   }