Properly check arguments of query dep graph attrs

Author: JonathanBrouwer

compiler/rustc_attr_parsing/src/attributes/rustc_internal.rs

@@ -945,7 +945,7 @@ impl<S: Stage> SingleAttributeParser<S> for RustcIfThisChangedParser {
                     cx.adcx().expected_single_argument(attr_span, list.len());
                     return None;
                 };
-                let Some(ident) = item.meta_item().and_then(|item| item.ident()) else {
+                let Some(ident) = item.meta_item_no_args().and_then(|item| item.ident()) else {
                     cx.adcx().expected_identifier(item.span());
                     return None;
                 };
@@ -1003,7 +1003,7 @@ impl<S: Stage> CombineAttributeParser<S> for RustcThenThisWouldNeedParser {
             cx.emit_err(AttributeRequiresOpt { span: cx.attr_span, opt: "-Z query-dep-graph" });
         }
         let item = cx.single_element_list(args, cx.attr_span)?;
-        let Some(ident) = item.meta_item().and_then(|item| item.ident()) else {
+        let Some(ident) = item.meta_item_no_args().and_then(|item| item.ident()) else {
             cx.adcx().expected_identifier(item.span());
             return None;
         };