[bug: #223] patches/buildroot: fix memory leak in netsnmp (IP-MIB)
After IP-MIB has been enabled, WRS was runnig out of memory after 1-2 months. SNMP was leaking about 10MB/month of memory. A leak was observed no matter if and which OIDs were queried. Signed-off-by: Adam Wujek <dev_public@wujek.eu>