Correct check for parent context

- Comment states check parent, code checked child instead
 - No point performing parent check as code above ensures that this is never nil

command.go

@@ -1109,11 +1109,8 @@ func (c *Command) ExecuteC() (cmd *Command, err error) {
 		cmd.commandCalledAs.name = cmd.Name()
 	}
 
-	// We have to pass global context to children command
+	// Copy context
-	// if context is present on the parent command.
+	cmd.ctx = c.ctx
-	if cmd.ctx == nil {
-		cmd.ctx = c.ctx
-	}
 
 	err = cmd.execute(flags)
 	if err != nil {