Include attributes in removal span for unused imports.

Author: m-ou-se

compiler/rustc_resolve/src/check_unused.rs

@@ -98,7 +98,7 @@ impl<'a, 'b> UnusedImportCheckVisitor<'a, 'b> {
 
 impl<'a, 'b> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b> {
     fn visit_item(&mut self, item: &'a ast::Item) {
-        self.item_span = item.span;
+        self.item_span = item.span_with_attributes();
 
         // Ignore is_public import statements because there's no way to be sure
         // whether they're used or not. Also ignore imports with a dummy span