Possible unnecessary null check

[mattcollier]

Static analysis by DeepScan points out on L81:

Variable 'info' is null checked here, but its property is accessed without null check prior at line 70.

winston-transport/index.js

Lines 69 to 83 in eabd2ac

	TransportStream.prototype._write = function _write(info, enc, callback) {
	if (this.silent || (info.exception === true && !this.handleExceptions)) {
	return callback(null);
	}
	// Remark: This has to be handled in the base transport now because we
	// cannot conditionally write to our pipe targets as stream. We always
	// prefer any explicit level set on the Transport itself falling back to
	// any level set on the parent.
	const level = this.level || (this.parent && this.parent.level);
	if (!level || this.levels[level] >= this.levels[info[LEVEL]]) {
	if (info && !this.format) {
	return this.log(info, callback);
	}