Merge pull request cosmos#337 from CosmWasm/export_home_334

Fix home dir issue in export command

cmd/wasmd/root.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"io"
 	"os"
 	"path/filepath"
@@ -108,7 +109,7 @@ func initRootCmd(rootCmd *cobra.Command, encodingConfig app.EncodingConfig) {
 		debug.Cmd(),
 	)
 
-	server.AddCommands(rootCmd, app.DefaultNodeHome, newApp, createWasnAppAndExport, addModuleInitFlags)
+	server.AddCommands(rootCmd, app.DefaultNodeHome, newApp, createWasmAppAndExport, addModuleInitFlags)
 
 	// add keybase, auxiliary RPC, query, and tx child commands
 	rootCmd.AddCommand(
@@ -237,19 +238,23 @@ func newApp(logger log.Logger, db dbm.DB, traceStore io.Writer, appOpts serverty
 	)
 }
 
-func createWasnAppAndExport(
+func createWasmAppAndExport(
 	logger log.Logger, db dbm.DB, traceStore io.Writer, height int64, forZeroHeight bool, jailAllowedAddrs []string,
 	appOpts servertypes.AppOptions) (servertypes.ExportedApp, error) {
 
 	var wasmApp *app.WasmApp
+	homePath, ok := appOpts.Get(flags.FlagHome).(string)
+	if !ok || homePath == "" {
+		return servertypes.ExportedApp{}, errors.New("application home not set")
+	}
 	if height != -1 {
-		wasmApp = app.NewWasmApp(logger, db, traceStore, false, map[int64]bool{}, "", uint(1), app.GetEnabledProposals(), appOpts)
+		wasmApp = app.NewWasmApp(logger, db, traceStore, false, map[int64]bool{}, homePath, uint(1), app.GetEnabledProposals(), appOpts)
 
 		if err := wasmApp.LoadHeight(height); err != nil {
 			return servertypes.ExportedApp{}, err
 		}
 	} else {
-		wasmApp = app.NewWasmApp(logger, db, traceStore, true, map[int64]bool{}, "", uint(1), app.GetEnabledProposals(), appOpts)
+		wasmApp = app.NewWasmApp(logger, db, traceStore, true, map[int64]bool{}, homePath, uint(1), app.GetEnabledProposals(), appOpts)
 	}
 
 	return wasmApp.ExportAppStateAndValidators(forZeroHeight, jailAllowedAddrs)