split GetRelevantBodyPartRecord return in 2 rows so it easier to find out...

split GetRelevantBodyPartRecord return in 2 rows so it easier to find out which .Single() causes error

Source/Modules/STD/std.cs

@@ -47,7 +47,9 @@ namespace rjw
 				return null;
 			}
 
-			return pawn?.RaceProps.body.GetPartsWithDef(std.appliedOnFixedBodyParts.Single()).Single();
+			BodyPartDef target = std.appliedOnFixedBodyParts.Single();
+			return pawn?.RaceProps.body.GetPartsWithDef(target).Single();
+			//return pawn?.RaceProps.body.GetPartsWithDef(std.appliedOnFixedBodyParts.Single()).Single();
 		}
 
 		public static bool is_wasting_away(Pawn p)