Shorten split in tidyall

tools/tidyall

@@ -23,8 +23,7 @@ sub perltidy_version {
     # is to separate the qualifier from the actual version with a space.
     #
     # It's safe enough to assume that the last item is really the version.
-    my @version_components = split(' ', $version);
-    return pop(@version_components);
+    return split(' ', $version)[-1];
 }
 
 sub is_force_flag { $_ eq '--force' }