src: fix integer overflow in GetNow

PR-URL: #22214
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Bradley Farias <[email protected]>
Reviewed-By: Matheus Marchini <[email protected]>
Reviewed-By: Tiancheng "Timothy" Gu <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>
Reviewed-By: Сковорода Никита Андреевич <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>

src/env.cc

@@ -536,7 +536,7 @@ Local<Value> Environment::GetNow() {
   CHECK_GE(now, timer_base());
   now -= timer_base();
   if (now <= 0xffffffff)
-    return Integer::New(isolate(), static_cast<uint32_t>(now));
+    return Integer::NewFromUnsigned(isolate(), static_cast<uint32_t>(now));
   else
     return Number::New(isolate(), static_cast<double>(now));
 }