sigh... fix one more named parameter issue
@@ -29,4 +29,4 @@ type FlagStringFunc func(Flag) string
// ExitErrHandlerFunc is executed if provided in order to handle ExitError values
// returned by Actions and Before/After functions.
-type ExitErrHandlerFunc func(context *Context, error)
+type ExitErrHandlerFunc func(context *Context, err error)
