Caldav: Fix bug 2907350, multiple calendar support issue with iCal

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@879 3d1905a2-6b24-0410-a738-b14d5a86fcbd

src/java/davmail/caldav/CaldavConnection.java

@@ -1374,7 +1374,7 @@ public class CaldavConnection extends AbstractConnection {
             if (subFolder == null || subFolder.length() == 0) {
                 return getExchangeFolderPath();
             } else {
-                return session.buildCalendarPath(getPathElement(2), subFolder);
+                return getExchangeFolderPath()+'/'+subFolder;
             }
         }
     }