Rollup merge of #109678 - compiler-errors:dont-shadow-in-incremental_verify_ich_failed, r=Nilstrieb

Don't shadow the `dep_node` var in `incremental_verify_ich_failed`

It's better to debug print `DepNode` instead of `ErrorGuaranteed` one line below :^)

fixes #109676

Author: matthiaskrgr

compiler/rustc_query_system/src/query/plumbing.rs

@@ -703,8 +703,7 @@ fn incremental_verify_ich_failed<Tcx>(
         };
 
         let dep_node = tcx.dep_graph().data().unwrap().prev_node_of(prev_index);
-
-        let dep_node = tcx.sess().emit_err(crate::error::IncrementCompilation {
+        tcx.sess().emit_err(crate::error::IncrementCompilation {
             run_cmd,
             dep_node: format!("{dep_node:?}"),
         });