Use 'original' parameter for the birth outcome patch instead of looking up the function again

1.5/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_PregeneratedBabies.cs

@@ -56,7 +56,7 @@ namespace RJW_Menstruation
                     pushingcomp.babies = this.babies;
                     pushingcomp.enzygoticSiblings = this.enzygoticSiblings;
                     break;
-                case Hediff_LaborPushing hediff_LaborPushing:
+                case Hediff_LaborPushing _:
                     // Nothing to do, the laborpushing transpiler will pick it up
                     break;
             }
@@ -175,13 +175,11 @@ namespace RJW_Menstruation
             return baby;
         }
 
-        private static readonly MethodInfo ApplyBirthOutcome = typeof(PregnancyUtility).GetMethod(nameof(PregnancyUtility.ApplyBirthOutcome));
-        private static readonly int birtherThing = ApplyBirthOutcome.GetParameters().FirstIndexOf(parameter => parameter.Name == "birtherThing" && parameter.ParameterType == typeof(Thing));
         private static readonly MethodInfo GeneratePawn = typeof(PawnGenerator).GetMethod(nameof(PawnGenerator.GeneratePawn), new Type[] {typeof (PawnGenerationRequest)});
-
-        public static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions)
+        public static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions, MethodBase original)
         {
             bool methodPatched = false;
+            int birtherThing = original.GetParameters().FirstIndexOf(parameter => parameter.Name == "birtherThing" && parameter.ParameterType == typeof(Thing));
             if (birtherThing < 0) throw new InvalidOperationException("Could not locate index of birtherThing");
             if (GeneratePawn?.ReturnType != typeof(Pawn)) throw new InvalidOperationException("GeneratePawn not found");
             foreach (CodeInstruction instruction in instructions)