i2ptunnel: Close sockets in finally{}

...i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelClient.java

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

...unnel/java/src/net/i2p/i2ptunnel/I2PTunnelHTTPClient.java

...java/src/net/i2p/i2ptunnel/I2PTunnelHTTPClientRunner.java

...tunnel/java/src/net/i2p/i2ptunnel/I2PTunnelIRCClient.java

...tunnel/java/src/net/i2p/i2ptunnel/I2PTunnelIRCServer.java

...i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelRunner.java

...el/java/src/net/i2p/i2ptunnel/irc/I2PTunnelDCCClient.java

...l/java/src/net/i2p/i2ptunnel/socks/I2PSOCKSIRCTunnel.java

...nnel/java/src/net/i2p/i2ptunnel/socks/I2PSOCKSTunnel.java