[wpmem_tos] isn't return external link.

[norando]

Thanks for WP-Members.

When [wpmem_tos url="http://yoursite.com/your-tos-page"] is set,
strpos( $atts['url'], 'http://' )
return int 0
Since int 0 is considered false by PHP, the function tos will not return $atts['url'] in this case.
It should need the === operator to test the return value of this function.

wp-members-dev/includes/class-wp-members-shortcodes.php

Lines 720 to 723 in 33018aa

	function tos( $atts, $content, $tag ) {
	$url = ( strpos( $atts['url'], 'http://' ) || strpos( $atts['url'], 'https://' ) ) ? $atts['url'] : home_url( $atts['url'] );
	return esc_url( $url );
	}