unsafe_images_rules plugin fix

I recently upgraded my php installation and found the unsafe_images_rules
was causing unsafe images to no longer works. Turns out it was using
eregi(), which is deprecated. Simply switched it for preg_match() and now
all seems to work. Here's my patch:

--- functions.php.orig	2018-07-14 11:36:07.648915558 -0700
+++ functions.php	2018-07-14 11:36:36.295868619 -0700
@@ -332,7 +332,7 @@
 function unsafe_image_rules_link_string($str) {
     global $unsafe_image_found_email, $Email_RegExp_Match;

-    while (eregi('(' . $Email_RegExp_Match . ')', $str, $hits)) {
+    while (preg_match('(' . $Email_RegExp_Match . ')', $str, $hits)) {
         $str = substr(strstr($str, $hits[0]), strlen($hits[0]));
         if (! isset($unsafe_image_found_email[$hits[0]])) {
             echo '?address=' .


-Eric


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