Parser infinite loop when parsing unsupported match body expression that is surrounded by brackets

[Lubrsi]

This causes the parser to go into an infinite loop:

function main() {
    match foo {
        (++foo) => 1
    }
}

Removing the () around ++foo makes it error:

-----
function main() {
    match foo {
        ++foo => 1
    }
}
 
-----
Error: ParserError("expected '=>' after pattern case", Span { file_id: 1, start: 42, end: 44 })

[holychowders]

Looking into this.

[lanmonster]

fixed as of 9012330