`Database.open`: callback not called if `mode` is undefined

[tguichaoua]

Issue Summary

In the code bellow if mode is set to undefined the callback is never called.
I expected that both code are equivalent.

  const db = new sqlite3.Database(":memory:", undefined, () => {
    console.log("1"); // not called
  });
  const db2 = new sqlite3.Database(":memory:", () => {
    console.log("2"); // called
  });

Steps to Reproduce

See summary

Version

5.1.6

Node.js Version

18.15.0

How did you install the library?

npm

[tguichaoua]

node-sqlite3/src/database.cc

Lines 130 to 143 in 8598a9d

	unsigned int pos = 1;
	int mode;
	if (info.Length() >= pos && info[pos].IsNumber() && OtherIsInt(info[pos].As<Napi::Number>())) {
	mode = info[pos++].As<Napi::Number>().Int32Value();
	}
	else {
	mode = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_FULLMUTEX;
	}
	Napi::Function callback;
	if (info.Length() >= pos && info[pos].IsFunction()) {
	callback = info[pos++].As<Napi::Function>();
	}

In the code, if the second argument is pressent but not a number (e.g. undefined) pos is not incremented.
So it try to read the second argument as the callback function, but because it is undefined, callback is not set.