[bug] panic when the len(footers) is less than the columns

[eryx]

code

func main() {

	data := [][]string{
		[]string{"A", "The Good", "500"},
		[]string{"B", "The Very very Bad Man", "288"},
		[]string{"C", "The Ugly", "120"},
		[]string{"D", "The Gopher", "800"},
	}

	table := tablewriter.NewWriter(os.Stdout)
	table.SetHeader([]string{"Name", "Sign", "Rating"})

	table.SetFooter([]string{"Name", "Sign"})

	for _, v := range data {
		table.Append(v)
	}
	table.Render() // Send output
}

go run output:

+------+-----------------------+--------+
| NAME |         SIGN          | RATING |
+------+-----------------------+--------+
| A    | The Good              |    500 |
| B    | The Very very Bad Man |    288 |
| C    | The Ugly              |    120 |
| D    | The Gopher            |    800 |
+------+-----------------------+--------+
| NAME |         SIGN          |panic: runtime error: index out of range [2] with length 2

goroutine 1 [running]:
github.com/olekukonko/tablewriter.(*Table).printFooter(0xc000130000)
	/opt/workspace/pkg/mod/github.com/olekukonko/[email protected]/table.go:563 +0xa8a
github.com/olekukonko/tablewriter.(*Table).Render(0xc000130000)
	/opt/workspace/pkg/mod/github.com/olekukonko/[email protected]/table.go:138 +0xeb
main.main()
...