fix dropping diagnostic without emit

Ezrashaw · Ezrashaw · commit fcd5ed21b77d · 2023-01-16T16:18:56.000+13:00
diff --git a/compiler/rustc_parse/src/parser/ty.rs b/compiler/rustc_parse/src/parser/ty.rs
@@ -941,7 +941,8 @@ impl<'a> Parser<'a> {
             && let Some(path) = self.recover_path_from_fn()
         {
             path
-        } else if !self.token.is_path_start() && self.token.can_begin_type() && let Ok(ty) = self.parse_ty_no_plus() {
+        } else if !self.token.is_path_start() && self.token.can_begin_type() {
+            let ty = self.parse_ty_no_plus()?;
             // Instead of finding a path (a trait), we found a type.
             let mut err = self.struct_span_err(ty.span, "expected a trait, found type");
 

Original file line number	Diff line number	Diff line change
`@@ -941,7 +941,8 @@ impl<'a> Parser<'a> {`
`941`	`941`	`&& let Some(path) = self.recover_path_from_fn()`
`942`	`942`	`{`
`943`	`943`	`path`
`944`		`- } else if !self.token.is_path_start() && self.token.can_begin_type() && let Ok(ty) = self.parse_ty_no_plus() {`
	`944`	`+ } else if !self.token.is_path_start() && self.token.can_begin_type() {`
	`945`	`+ let ty = self.parse_ty_no_plus()?;`
`945`	`946`	`// Instead of finding a path (a trait), we found a type.`
`946`	`947`	`let mut err = self.struct_span_err(ty.span, "expected a trait, found type");`
`947`	`948`