Fix bug 43758. Return empty string rather than null to prevent the NPEs that happen otherwise.
Fix bug 43758. Return empty string rather than null to prevent the NPEs that happen otherwise.

git-svn-id: 79cef5a5a257cc9dbe40a45ac190115b4780e2d0@607903 13f79535-47bb-0310-9956-ffa450edef68

Nickname0806/Test_Q4,Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4