api: Single method for static miner info

cli/client.go

@@ -375,16 +375,16 @@ var clientQueryAskCmd = &cli.Command{
 			}
 			pid = p
 		} else {
-			p, err := api.StateMinerPeerID(ctx, maddr, types.EmptyTSK)
+			mi, err := api.StateMinerInfo(ctx, maddr, types.EmptyTSK)
 			if err != nil {
 				return xerrors.Errorf("failed to get peerID for miner: %w", err)
 			}
 
-			if p == peer.ID("SETME") {
+			if mi.PeerId == peer.ID("SETME") {
 				return fmt.Errorf("the miner hasn't initialized yet")
 			}
 
-			pid = p
+			pid = mi.PeerId
 		}
 
 		ask, err := api.ClientQueryAsk(ctx, pid, maddr)

cli/state.go

@@ -594,12 +594,12 @@ var stateSectorSizeCmd = &cli.Command{
 			return err
 		}
 
-		ssize, err := api.StateMinerSectorSize(ctx, addr, ts.Key())
+		mi, err := api.StateMinerInfo(ctx, addr, ts.Key())
 		if err != nil {
 			return err
 		}
 
-		fmt.Printf("%d\n", ssize)
+		fmt.Printf("%d\n", mi.SectorSize)
 		return nil
 	},
 }