Resolve unnested_or_patterns pedantic clippy lint in test

    warning: unnested or-patterns
       --> tests/common/eq.rs:895:25
        |
    895 | /                         AttrItemKind::Parsed(_)
    896 | |                         | AttrItemKind::Unparsed(AttrArgs::Empty)
    897 | |                         | AttrItemKind::Unparsed(AttrArgs::Delimited(_)) => false,
        | |________________________________________________________________________^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnested_or_patterns
        = note: `-W clippy::unnested-or-patterns` implied by `-W clippy::pedantic`
        = help: to override `-W clippy::pedantic` add `#[allow(clippy::unnested_or_patterns)]`
    help: nest the patterns
        |
    895 ~                         AttrItemKind::Parsed(_) |
    896 ~ AttrItemKind::Unparsed(AttrArgs::Empty | AttrArgs::Delimited(_)) => false,
        |

Author: dtolnay

tests/common/eq.rs

@@ -893,8 +893,7 @@ impl SpanlessEq for AttrKind {
                 SpanlessEq::eq(&path, &normal2.item.path)
                     && match &normal2.item.args {
                         AttrItemKind::Parsed(_)
-                        | AttrItemKind::Unparsed(AttrArgs::Empty)
-                        | AttrItemKind::Unparsed(AttrArgs::Delimited(_)) => false,
+                        | AttrItemKind::Unparsed(AttrArgs::Empty | AttrArgs::Delimited(_)) => false,
                         AttrItemKind::Unparsed(AttrArgs::Eq { eq_span: _, expr }) => {
                             match &expr.kind {
                                 ExprKind::Lit(lit) => is_escaped_lit(lit, *unescaped),