Fix patching profie with moderator fee

Author: cpacia

core/profile.go

@@ -195,6 +195,12 @@ func (n *OpenBazaarNode) PatchProfile(patch map[string]interface{}) error {
 
 	repoProfile.NormalizeDataForAllSchemas()
 
+	if repoProfile.GetProtobuf().ModeratorInfo != nil && repoProfile.GetProtobuf().ModeratorInfo.Fee != nil {
+		if repoProfile.GetProtobuf().ModeratorInfo.Fee.FeeType == pb.Moderator_Fee_PERCENTAGE {
+			repoProfile.GetProtobuf().ModeratorInfo.Fee.FixedFee = nil
+		}
+	}
+
 	if err := repoProfile.Valid(); err != nil {
 		return fmt.Errorf("invalid profile: %s", err.Error())
 	}

repo/listing.go

@@ -919,8 +919,8 @@ func (cs ListingCoupons) GetProtobuf() []*pb.Listing_Coupon {
 	var cspb = make([]*pb.Listing_Coupon, len(cs))
 	for i, c := range cs {
 		cspb[i] = &pb.Listing_Coupon{
-			Title:            c.GetTitle(),
-			PercentDiscount:  c.GetPercentOff(),
+			Title:           c.GetTitle(),
+			PercentDiscount: c.GetPercentOff(),
 		}
 		if c.GetAmountOff() != nil {
 			cspb[i].BigPriceDiscount = c.GetAmountOff().Amount.String()