[XFA] - Avoid an exception when zooming on a XFA

[calixteman]

No description provided.

[Snuffleupagus]

At first I didn't understand why this happened, but then noticed this return value:

pdf.js/web/xfa_layer_builder.js

Lines 96 to 99 in d262ca3

	if (this.div) {
	return XfaLayer.update(parameters);
	}

and looking at that method things became clearer:

pdf.js/src/display/xfa_layer.js

Lines 268 to 277 in d262ca3

	/**
	* Update the XFA layer.
	*
	* @param {XfaLayerParameters} parameters
	*/
	static update(parameters) {
	const transform = `matrix(${parameters.viewport.transform.join(",")})`;
	parameters.div.style.transform = transform;
	parameters.div.hidden = false;
	}

[calixteman]

/botio integration-test

[pdfjsbot]

From: Bot.io (Windows)

---

Invalid

Command not implemented: integration.

[pdfjsbot]

From: Bot.io (Linux m4)

---

Invalid

Command not implemented: integration.

[calixteman]

/botio integrationtest

[pdfjsbot]

From: Bot.io (Windows)

---

Received

Command cmd_integrationtest from @calixteman received. Current queue size: 0

Live output at: http://54.193.163.58:8877/3e558ad848f319e/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

---

Received

Command cmd_integrationtest from @calixteman received. Current queue size: 0

Live output at: http://54.241.84.105:8877/6c414754308648a/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

---

Success

Full output at http://54.241.84.105:8877/6c414754308648a/output.txt

Total script time: 4.98 mins

• Integration Tests: Passed

[pdfjsbot]

From: Bot.io (Windows)

---

Failed

Full output at http://54.193.163.58:8877/3e558ad848f319e/output.txt

Total script time: 12.67 mins

• Integration Tests: FAILED