Changed password config regex

The password regex searches for password assignments, extracts the
password and replaces it with a dummy value to prevent it being logged.

This change adjusts the password regex to no longer accept trailing
characters behind the password string

ddclient.in

@@ -1614,7 +1614,7 @@ sub _read_config {
         $content .= "$_\n" unless /^#/;
 
         ## parsing passwords is special
-        if (/^([^#]*\s)?([^#]*?password\S*?)\s*=\s*('.*'|[^']\S*)(.*)/) {
+        if (/^([^#]*\s)?([^#]*?password)\s*=\s*('.*'|[^']\S*)(.*)/) {
             my ($head, $key, $value, $tail) = ($1 // '', $2, $3, $4);
             $value = $1 if $value =~ /^'(.*)'$/;
             $passwords{$key} = $value;