[IoElement] Fix the error when it has no property

uro / teltonika-fm-parser

Teltonika fm xxxx protocol encoder and decoder

The Unlicense

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[IoElement] Fix the error when it has no property #19

Open elementaire opened 1 year ago

elementaire commented 1 year ago

Q	A
Branch?	master
Bug fix?	yes
New feature?	no
Deprecations?	no
Issues	-
License	Public Domain

Calling the method IoElement::getProperties throws an error "$properties must not be accessed before initialization" when the device is configured to send no IOElement.

This PR fixes this.