switch order of checks

Author: O957

R/check_changes_for_autoapproval.R

@@ -23,10 +23,10 @@ check_changes_for_autoapproval <- function(
 ) {
   checkmate::assert_string(gh_actor)
   checkmate::assert_string(base_hub_path)
+  checkmate::assert_character(changed_files)
   if (length(changed_files) == 0) {
     cli::cli_abort("Empty PRs cannot be autoapproved.")
   }
-  checkmate::assert_character(changed_files)
 
   # tibble of changed files with paths
   changed_files_tbl <- tibble::tibble(