If the PC gives birth to a single child you get a number of errors because _p...

If the PC gives birth to a single child you get a number of errors because _p wasn't set. Rather than replace them all with "0" I just set _p to 0.

src/pregmod/sePlayerBirth.tw

@@ -444,7 +444,7 @@ You arrange yourself to give birth, relaxing until your body urges you to begin
 	<<set $PC.birthOther += _others, $PC.birthSelf += _self, $PC.birthCitizen += _citizens, $PC.birthMaster += _oldMaster, $PC.birthArcOwner += _arcOwner, $PC.birthClient += _clients, $PC.birthElite += _elite, $PC.birthLab += _lab, $PC.birthDegenerate += _slavesLength>>
 
 	<<if _curBabies == 1>>
-
+        <<set _p = 0>>
 		<<if $PC.curBabies[_p].genetics.race == $PC.origRace>>
 			<<set _PCDegree++>>
 		<</if>>