Fix OF-654 - Limit index size of JID to 256 for mysql

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@13847 b35dd754-fafc-0310-a699-88a17e54d16e

src/database/openfire_mysql.sql

@@ -64,7 +64,7 @@ CREATE TABLE ofRoster (
   nick                  VARCHAR(255),
   PRIMARY KEY (rosterID),
   INDEX ofRoster_unameid_idx (username),
-  INDEX ofRoster_jid_idx (jid)
+  INDEX ofRoster_jid_idx (jid(255))
 );
 
 CREATE TABLE ofRosterGroups (