VPP-229: fix NPE in JNI array handling
VPP-229: fix NPE in JNI array handling

Change-Id: Ieb5182a7a3612e09bd2b28eb6a4abbdb4d29d34b
Signed-off-by: Marek Gradzki <3ca09cd7b7147613247c2a96dcdb0ba33114f8e7@cisco.com>

vpp-dev/vpp,FDio/vpp,milanlenco/vpp,GabrielGanne/vpp-flowtable,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,chrisy/vpp,milanlenco/vpp,FDio/vpp,GabrielGanne/vpp-flowtable,milanlenco/vpp,GabrielGanne/vpp-flowtable,GabrielGanne/vpp-flowtable,vpp-dev/vpp,milanlenco/vpp,vpp-dev/vpp,milanlenco/vpp,chrisy/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,chrisy/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,milanlenco/vpp,vpp-dev/vpp