lncli: cancel RPC context on OS interrupts

cmd/lncli/cmd_version.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"context"
 	"fmt"
 
 	"github.com/lightningnetwork/lnd/build"
@@ -21,6 +20,7 @@ var versionCommand = cli.Command{
 }
 
 func version(ctx *cli.Context) error {
+	ctxc := getContext()
 	conn := getClientConn(ctx, false)
 	defer conn.Close()
 
@@ -40,8 +40,7 @@ func version(ctx *cli.Context) error {
 
 	client := verrpc.NewVersionerClient(conn)
 
-	ctxb := context.Background()
-	lndVersion, err := client.GetVersion(ctxb, &verrpc.VersionRequest{})
+	lndVersion, err := client.GetVersion(ctxc, &verrpc.VersionRequest{})
 	if err != nil {
 		printRespJSON(versions)
 		return fmt.Errorf("unable fetch version from lnd: %v", err)