Possible bad copy paste in code

[Bbulatov]

Hello!
During the static analysis was found possible mistake in code:

1. In runtime/Go/antlr/v4/parser_atn_simulator.go:1475 value 'GetLiteralNames' might be 'GetSymbolicNames', because before accessing the dimension, you need to check the existence as it was in the block runtime/Go/antlr/v4/parser_atn_simulator.go:1471-1473. Is this a bug and does it need to be fixed?