Fixed runtime in blood transfer.

Fixed cure machine producing virus blood wrong.
Changes to existing syndromes:
-Cough : now has chance to infect people around mob.
-Telepathy : now should properly give powers to the mob.

New syndromes:
-Topographical Cretinism : confusing directions, much like drunk effect.
-Blackout : short-time blindness

code/modules/organs/blood.dm

@@ -201,7 +201,7 @@ var/const/BLOOD_VOLUME_SURVIVE = 122
 		vessel.add_reagent("blood", amount, injected.data)
 		vessel.update_total()
 	var/list/viruses = injected.data["virus2"]
-	if (viruses.len)
+	if (viruses && viruses.len)
 		virus2 |= viruses
 	if (injected.data["antibodies"] && prob(5))
 		antibodies |= injected.data["antibodies"]