Close resources

apps/i2psnark/java/src/org/klomp/snark/dht/PersistDHT.java

apps/sam/java/src/net/i2p/sam/SAMBridge.java

router/java/src/net/i2p/router/Blocklist.java

router/java/src/net/i2p/router/MultiRouter.java

router/java/src/net/i2p/router/transport/GeoIP.java

router/java/src/net/i2p/router/transport/GeoIPv6.java

router/java/src/net/i2p/router/util/EventLog.java