LibWeb/Streams: Use MUST_OR_THROW_OOM() when creating JS exceptions

This cannot throw unless we OOM.

Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.cpp

@@ -84,7 +84,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Promise>> ReadableStreamDefaultReader::
 
     // 1. If this.[[stream]] is undefined, return a promise rejected with a TypeError exception.
     if (!m_stream) {
-        auto exception = TRY(JS::TypeError::create(realm, "Cannot read from an empty stream"sv));
+        auto exception = MUST_OR_THROW_OOM(JS::TypeError::create(realm, "Cannot read from an empty stream"sv));
         auto promise_capability = WebIDL::create_rejected_promise(realm, exception);
         return JS::NonnullGCPtr { verify_cast<JS::Promise>(*promise_capability->promise()) };
     }