fix highlighting input/outputs in function call in ST, if comment section is placed
inside call.

For example:

PackOutputs(
W4 := OUT1,
W5 := OUT2,
W6 := OUT3,
W7 := OUT4,
W8 := OUT5 (* comment inside call *),
W9 := OUT6,
W10 := OUT7,
W11 := OUT8);

<?xml version='1.0' encoding='utf-8'?>
<BeremizRoot xmlns:xsd="http://www.w3.org/2001/XMLSchema" URI_location="WAMP://127.0.0.1:8888#Automation#2534667845">
  <TargetType/>
</BeremizRoot>