quakespasm.pak: Another z-fighting workaround.

This fixes:

e2m3:
- The wallpiece that blocks the way out of the Well of Wishes (when open).


git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1136 af15c1b1-3010-417e-b628-4374ebc0bcbd

quakespasm/Misc/qs_pak/maps/e2m3.ent

@@ -2651,6 +2651,7 @@
 "spawnflags" "2"
 "targetname" "t41"
 "model" "*66"
+"t_length" "65" // svdijk -- added to prevent z-fighting
 }
 {
 "classname" "trigger_multiple"