Memory leaks in parser

[eschkufz]

Overview

Failed parses lead to memory leaks in the parser. It's a slow leak unless you really work for it, say by writing a script to spam cascade with failed parses, but it's still worth fixing.

Deliverables

• Fix memory leaks in parser.

[eschkufz]

Suggestion from ed ---

This might be useful for interactive editing of Verilog code and JIT compiling.

Verilog parser for interactive Verilog Syntax highlighting.
https://github.com/tree-sitter/tree-sitter-verilog