#1245 Rmon/statistics.c prefent NULL ptr issue

[claus klein]

net-snmp 5.4.4 core dumps if I enable the RMON-MIB and do the following after starting the snmpd:

snmpset -r0 -m +RMON2-MIB -v3 localhost \ etherStatsStatus.1 i 4 \ etherStatsDataSource.2 o interfaces.ifTable.ifEntry.ifIndex.2

Note the different index values!

My patch prefents the use of a NULL pointer.

[claus klein]

The same error may occur than ones