Single quotes in tooltip are slashed

In version 2.2.3 a single quote in a definition gets a backslash added in front of it in the tooltip. I traced it to glossary.php:255:

$glossaryItemContent = addslashes($glossaryItemContent);

guessing that the intent is to make the content attribute-safe, I changed it to this to fix the issue:

$glossaryItemContent = esc_attr($glossaryItemContent);

http://wordpress.org/plugins/enhanced-tooltipglossary/