MAINT-6929 [Contribution] E-mail links are not parsed correctly when top level...

MAINT-6929 [Contribution] E-mail links are not parsed correctly when top level domain is over 6 characters.

doc/contributions.txt

@@ -209,6 +209,7 @@ Ansariel Hiller
 	MAINT-6917
 	STORM-2140
 	MAINT-6912
+	MAINT-6929
 Aralara Rajal
 Arare Chantilly
 	CHUIBUG-191

indra/llui/llurlentry.cpp

@@ -1377,7 +1377,7 @@ std::string LLUrlEntryIcon::getIcon(const std::string &url)
 LLUrlEntryEmail::LLUrlEntryEmail()
 	: LLUrlEntryBase()
 {
-	mPattern = boost::regex("(mailto:)?[\\w\\.\\-]+@[\\w\\.\\-]+\\.[a-z]{2,6}",
+	mPattern = boost::regex("(mailto:)?[\\w\\.\\-]+@[\\w\\.\\-]+\\.[a-z]{2,63}",
 							boost::regex::perl | boost::regex::icase);
 	mMenuName = "menu_url_email.xml";
 	mTooltip = LLTrans::getString("TooltipEmail");