\OneLogin_Saml2_Utils::redirect returns a string or redirects and exits

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>

Author: LukasReschke

lib/Saml2/Auth.php

@@ -291,6 +291,7 @@ public function processSLO($keepLocalSession = false, $requestId = null, $retrie
      * @param string $url        The target URL to redirect the user.
      * @param array  $parameters Extra parameters to be passed as part of the url
      * @param bool   $stay       True if we want to stay (returns the url string) False to redirect
+     * @return string|null
      */
     public function redirectTo($url = '', $parameters = array(), $stay = false)
     {
@@ -422,7 +423,7 @@ public function getAttribute($name)
      * @param bool        $stay            True if we want to stay (returns the url string) False to redirect
      * @param bool        $setNameIdPolicy When true the AuthNReuqest will set a nameIdPolicy element
      *
-     * @return If $stay is True, it return a string with the SLO URL + LogoutRequest + parameters
+     * @return string|null If $stay is True, it return a string with the SLO URL + LogoutRequest + parameters
      */
     public function login($returnTo = null, $parameters = array(), $forceAuthn = false, $isPassive = false, $stay = false, $setNameIdPolicy = true)
     {
@@ -462,7 +463,7 @@ public function login($returnTo = null, $parameters = array(), $forceAuthn = fal
      * @param string|null $nameIdFormat        The NameID Format will be set in the LogoutRequest.
      * @param string|null $nameIdNameQualifier The NameID NameQualifier will be set in the LogoutRequest.
      *
-     * @return If $stay is True, it return a string with the SLO URL + LogoutRequest + parameters
+     * @return string|null If $stay is True, it return a string with the SLO URL + LogoutRequest + parameters
      *
      * @throws OneLogin_Saml2_Error
      */