remove_role() possible bug

remove_role() function in capabilities.php has the return operator

return $wp_roles->remove_role( $role );

But $wp_roles->remove_role() returns nothing

function remove_role( $role )
if ( ! isset( $this->role_objects[$role] ) )
return;
unset( $this->role_objects[$role] );
unset( $this->role_names[$role] );
unset( $this->roles[$role] );
if ( $this->use_db )
update_option( $this->role_key, $this->roles );
}

I think it should be

function remove_role( $role ) {
if ( ! isset( $this->role_objects[$role] ) )
return false;
unset( $this->role_objects[$role] );
unset( $this->role_names[$role] );
unset( $this->roles[$role] );
if ( $this->use_db )
return update_option( $this->role_key, $this->roles );
} else {
return true;
}

Please confirm if this bug is known or not.