minor: parser cleanup

crates/parser/src/grammar.rs

@@ -183,6 +183,7 @@ fn opt_visibility(p: &mut Parser) -> bool {
                 }
             }
             m.complete(p, VISIBILITY);
+            true
         }
         // test crate_keyword_vis
         // crate fn main() { }
@@ -197,10 +198,10 @@ fn opt_visibility(p: &mut Parser) -> bool {
             let m = p.start();
             p.bump(T![crate]);
             m.complete(p, VISIBILITY);
-        }
-        _ => return false,
-    }
             true
+        }
+        _ => false,
+    }
 }
 
 fn opt_rename(p: &mut Parser) {

crates/parser/src/grammar/items.rs

@@ -135,18 +135,15 @@ pub(super) fn opt_item(p: &mut Parser, m: Marker) -> Result<(), Marker> {
                 p.bump_remap(T![default]);
                 has_mods = true;
             }
-            T![unsafe] => {
             // test default_unsafe_item
             // default unsafe impl T for Foo {
             //     default unsafe fn foo() {}
             // }
-                if matches!(p.nth(2), T![impl] | T![fn]) {
+            T![unsafe] if matches!(p.nth(2), T![impl] | T![fn]) => {
                 p.bump_remap(T![default]);
                 p.bump(T![unsafe]);
                 has_mods = true;
             }
-            }
-            T![async] => {
             // test default_async_fn
             // impl T for Foo {
             //     default async fn foo() {}
@@ -156,6 +153,7 @@ pub(super) fn opt_item(p: &mut Parser, m: Marker) -> Result<(), Marker> {
             // impl T for Foo {
             //     default async unsafe fn foo() {}
             // }
+            T![async] => {
                 let mut maybe_fn = p.nth(2);
                 let is_unsafe = if matches!(maybe_fn, T![unsafe]) {
                     maybe_fn = p.nth(3);