more misc findbugs

...el/java/src/net/i2p/i2ptunnel/I2PTunnelConnectClient.java

...reaming/java/src/net/i2p/client/streaming/Connection.java

apps/susidns/src/java/src/i2p/susi/dns/AddressbookBean.java

apps/systray/java/src/net/i2p/apps/systray/UrlLauncher.java

core/java/src/net/i2p/crypto/TrustedUpdate.java

...va/src/net/i2p/router/networkdb/kademlia/KBucketImpl.java