Fix fertility for animals

1.3/Source/PawnCapacities/PawnCapacityWorker_Fertility.cs

@@ -56,22 +56,28 @@ namespace rjw
 					zeroFertility = race.lifeExpectancy * RJWPregnancySettings.fertility_endage_female_humanlike; // Age when fertility hits 0%.
 				}
 			}
-
-			foreach (LifeStageAge lifestage in race.lifeStageAges)
+			//If pawn is an animal, first reproductive lifestage is (usually) adult, so set startMaxAge at first reproductive stage, and startAge at stage before that. 
+			int adult;
+			if (xxx.is_animal(pawn) && (adult = race.lifeStageAges.FirstIndexOf((ls) => ls.def.reproductive)) > 0)
+			{
+				startAge = race.lifeStageAges[adult - 1].minAge;
+				startMaxAge = race.lifeStageAges[adult].minAge;
+			}
+			else
 			{
-				if (lifestage.def.reproductive)
-					//presumably teen stage
-					if (startAge == 0f && startMaxAge == 0f)
-					{
-						startAge = lifestage.minAge;
-						startMaxAge = (Mathf.Max(startAge + (startAge + endAge) * 0.08f, startAge));
-					}
-					//presumably adult stage
-					else
-					{
-						if (startMaxAge > lifestage.minAge)
-							startMaxAge = lifestage.minAge;
-					}
+				foreach (LifeStageAge lifestage in race.lifeStageAges) {
+					if (lifestage.def.reproductive)
+						//presumably teen stage
+						if (startAge == 0f && startMaxAge == 0f) {
+							startAge = lifestage.minAge;
+							startMaxAge = (Mathf.Max(startAge + (startAge + endAge) * 0.08f, startAge));
+						}
+						//presumably adult stage
+						else {
+							if (startMaxAge > lifestage.minAge)
+								startMaxAge = lifestage.minAge;
+						}
+				}
 			}
 			//Log.Message(" Fertility ages for " + pawn.Name + " are: " + startAge + ", " + startMaxAge + ", " + endAge + ", " + endMaxAge);