Closes-Bug: #1441287
Closes-Bug: #1441287

Added null check for currentPagingInfo in the if loop that checks
whether to re-calculate the height of rows that are in view.

Change-Id: Ieb80998d70ba71ba78d477c6b2427f157d4d3643

hari-sk/contrail-web-core,biswajit-mandal/contrail-web-core,vishnuvv/contrail-web-core,vishnuvv/contrail-web-core,vishnuvv/contrail-web-core,nagakiran/contrail-web-core,nagakiran/contrail-web-core,nagakiran/contrail-web-core,hari-sk/contrail-web-core,biswajit-mandal/contrail-web-core,biswajit-mandal/contrail-web-core,hari-sk/contrail-web-core