Unnecessary character in gp_radio_buttons()

[Zodiac1978]

This line should be corrected to:
$res .= "\t<input type='radio' id='" . esc_attr( "{$name}[{$value}]" ) . "' name='" . esc_attr( $name ) . "' value='" . esc_attr( $value ) . "' $checked />&nbsp;";

PR with all these branches is to complicated for me for this little bug ... sorry ;)

[toolstack]

The extra spaces aren't required, just the removal of the spurious single quote after $checked.

For your reference, PR's should be created against the develop branch.