Fix: dont generate pointer for dest for Generic flag

cmd/urfave-cli-genflags/generated.gotmpl

@@ -17,7 +17,7 @@ type {{.TypeName}} struct {
   HasBeenSet bool
 
   Value {{if .ValuePointer}}*{{end}}{{.GoType}}
-  Destination *{{.GoType}}
+  Destination {{if .NoDestinationPointer}}{{else}}*{{end}}{{.GoType}}
 
   Aliases []string
   EnvVars []string

cmd/urfave-cli-genflags/main.go

@@ -223,10 +223,11 @@ func (gfs *Spec) SortedFlagTypes() []*FlagType {
 }
 
 type FlagTypeConfig struct {
-	SkipInterfaces []string           `yaml:"skip_interfaces"`
-	StructFields   []*FlagStructField `yaml:"struct_fields"`
-	TypeName       string             `yaml:"type_name"`
-	ValuePointer   bool               `yaml:"value_pointer"`
+	SkipInterfaces       []string           `yaml:"skip_interfaces"`
+	StructFields         []*FlagStructField `yaml:"struct_fields"`
+	TypeName             string             `yaml:"type_name"`
+	ValuePointer         bool               `yaml:"value_pointer"`
+	NoDestinationPointer bool               `yaml:"no_destination_pointer"`
 }
 
 type FlagStructField struct {
@@ -256,6 +257,14 @@ func (ft *FlagType) ValuePointer() bool {
 	return ft.Config.ValuePointer
 }
 
+func (ft *FlagType) NoDestinationPointer() bool {
+	if ft.Config == nil {
+		return false
+	}
+
+	return ft.Config.NoDestinationPointer
+}
+
 func (ft *FlagType) TypeName() string {
 	return TypeName(ft.GoType, ft.Config)
 }