fix(icq-relayer): return immediately on non-os.IsNotExist errors

This change avoids the need to try to brute-force creating
an entirely fresh configuration, in the case where an error
that isn't a path non-existence error occurs, for example
in the case of a permission error on the parent directory
or non-matching user/group permissions. Now we check against
the returned error after os.Stat and accordingly return
immediately or continue to create the configuration.

Fixes quicksilver-zone#1524

icq-relayer/cmd/config.go

@@ -24,11 +24,15 @@ func initConfig(cmd *cobra.Command) error {
 	cfgPath := path.Join(home, "config.yaml")
 	_, err = os.Stat(cfgPath)
 	if err != nil {
-		err = config.CreateConfig(home)
-		if err != nil {
+		if !os.IsNotExist(err) { // Return immediately
+			return err
+		}
+
+		if err := config.CreateConfig(home); err != nil {
 			return err
 		}
 	}
+
 	viper.SetConfigFile(cfgPath)
 	err = viper.ReadInConfig()
 	if err != nil {