[TYPO3-team-templavoila] FYI: #13180: Sanitize returnUrl

[Steffen Kamper]

Hi,

thx Tolleiv, committed to svn (1_4 rev 28994 and trunk rev 28995)
after reading and testing.

Now we are safe. I checked existance, but right, it changed in middle of 
main revision.

vg Steffen