reduce diff

context.go

@@ -25,11 +25,9 @@ type Context struct {
 // NewContext creates a new context. For use in when invoking an App or Command action.
 func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context {
 	c := &Context{App: app, flagSet: set, parentContext: parentCtx}
-
 	if parentCtx != nil {
 		c.Context = parentCtx.Context
 		c.shellComplete = parentCtx.shellComplete
-
 		if parentCtx.flagSet == nil {
 			parentCtx.flagSet = &flag.FlagSet{}
 		}