Remove unnecessary crate_name parameter to after_krate

It's always `tcx.crate_name(LOCAL_CRATE)`, it doesn't need to be passed
in separately.

src/librustdoc/formats/renderer.rs

@@ -43,11 +43,7 @@ crate trait FormatRenderer<'tcx>: Sized {
     /// Post processing hook for cleanup and dumping output to files.
     ///
     /// A handler is available if the renderer wants to report errors.
-    fn after_krate(
-        &mut self,
-        crate_name: Symbol,
-        diag: &rustc_errors::Handler,
-    ) -> Result<(), Error>;
+    fn after_krate(&mut self, diag: &rustc_errors::Handler) -> Result<(), Error>;
 
     fn cache(&self) -> &Cache;
 }
@@ -73,7 +69,6 @@ crate fn run_format<'tcx, T: FormatRenderer<'tcx>>(
     }
 
     // Render the crate documentation
-    let crate_name = krate.name;
     let mut work = vec![(format_renderer.make_child_renderer(), krate.module)];
 
     let unknown = Symbol::intern("<unknown item>");
@@ -106,5 +101,5 @@ crate fn run_format<'tcx, T: FormatRenderer<'tcx>>(
         }
     }
     prof.extra_verbose_generic_activity("renderer_after_krate", T::descr())
-        .run(|| format_renderer.after_krate(crate_name, diag))
+        .run(|| format_renderer.after_krate(diag))
 }

src/librustdoc/html/render/context.rs

@@ -11,7 +11,7 @@ use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
 use rustc_span::edition::Edition;
 use rustc_span::source_map::FileName;
-use rustc_span::{symbol::sym, Symbol};
+use rustc_span::symbol::sym;
 
 use super::cache::{build_index, ExternalLocation};
 use super::print_item::{full_path, item_path, print_item};
@@ -494,11 +494,8 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
         }
     }
 
-    fn after_krate(
-        &mut self,
-        crate_name: Symbol,
-        diag: &rustc_errors::Handler,
-    ) -> Result<(), Error> {
+    fn after_krate(&mut self, diag: &rustc_errors::Handler) -> Result<(), Error> {
+        let crate_name = self.tcx().crate_name(LOCAL_CRATE);
         let final_file = self.dst.join(&*crate_name.as_str()).join("all.html");
         let settings_file = self.dst.join("settings.html");
 

src/librustdoc/json/mod.rs

@@ -14,7 +14,7 @@ use std::rc::Rc;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
-use rustc_span::{edition::Edition, Symbol};
+use rustc_span::edition::Edition;
 
 use rustdoc_json_types as types;
 
@@ -204,11 +204,7 @@ impl<'tcx> FormatRenderer<'tcx> for JsonRenderer<'tcx> {
         Ok(())
     }
 
-    fn after_krate(
-        &mut self,
-        _crate_name: Symbol,
-        _diag: &rustc_errors::Handler,
-    ) -> Result<(), Error> {
+    fn after_krate(&mut self, _diag: &rustc_errors::Handler) -> Result<(), Error> {
         debug!("Done with crate");
         let mut index = (*self.index).clone().into_inner();
         index.extend(self.get_trait_items());