feat(distr): add set ubi keeper func (#12)

Author: 0xHansLee

x/distribution/keeper/params.go

@@ -16,6 +16,18 @@ func (k Keeper) GetUbi(ctx context.Context) (math.LegacyDec, error) {
 	return params.Ubi, nil
 }
 
+// SetUbi sets new ubi
+func (k Keeper) SetUbi(ctx context.Context, newUbi math.LegacyDec) error {
+	params, err := k.Params.Get(ctx)
+	if err != nil {
+		return err
+	}
+
+	params.Ubi = newUbi
+
+	return k.Params.Set(ctx, params)
+}
+
 // GetWithdrawAddrEnabled returns the current distribution withdraw address
 // enabled parameter.
 func (k Keeper) GetWithdrawAddrEnabled(ctx context.Context) (enabled bool, err error) {

x/staking/keeper/msg_server.go

@@ -241,7 +241,7 @@ func (k msgServer) EditValidator(ctx context.Context, msg *types.MsgEditValidato
 	}
 
 	if msg.MinSelfDelegation != nil {
-		if !msg.MinSelfDelegation.GT(validator.MinSelfDelegation) {
+		if !msg.MinSelfDelegation.GTE(validator.MinSelfDelegation) {
 			return nil, types.ErrMinSelfDelegationDecreased
 		}