Fix fallout from rust-lang/rust#52841

Author: alexcrichton

clippy_lints/src/utils/mod.rs

@@ -941,7 +941,8 @@ pub fn opt_def_id(def: Def) -> Option<DefId> {
         Def::AssociatedExistential(id) |
         Def::GlobalAsm(id) => Some(id),
 
-        Def::Upvar(..) | Def::Local(_) | Def::Label(..) | Def::PrimTy(..) | Def::SelfTy(..) | Def::Err => None,
+        Def::Upvar(..) | Def::Local(_) | Def::Label(..) | Def::PrimTy(..) | Def::SelfTy(..) |
+        Def::ToolMod | Def::NonMacroAttr | Def::Err => None,
     }
 }
 

tests/ui/author/for_loop.rs

@@ -1,4 +1,4 @@
-#![feature(tool_attributes)]
+#![feature(tool_attributes, stmt_expr_attributes)]
 
 fn main() {
     #[clippy::author]