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);

[TOPOLOGY]
NetName=None
Nodes=0x01
Node2Present=0x01
Node2Name=SlaveNode
Node2DCFName=Slave_0_0.eds
EDSBaseName=eds