remove some fatal vioelent exits

client/helpers/backgroundHelper.go

@@ -2,7 +2,6 @@ package helpers
 
 import (
 	"errors"
-	"log"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -159,7 +158,7 @@ func ReadMessage(messageFilename string) ([]string, []string, string, error) {
 				if _, err := os.Stat(filepath.Join(client.GetConfig().StoragePath, identity.Uuid, "files")); os.IsNotExist(err) {
 					err = os.MkdirAll(filepath.Join(client.GetConfig().StoragePath, identity.Uuid, "files"), 0700)
 					if err != nil {
-						log.Fatal(err)
+						return nil, nil, "ReadMessage: MkdirAll", err
 					}
 				}
 				for _, file := range usermsg.Files {