Fix Connection.close on 0.10 upwards

[davedoesdev]

I've left the old behaviour in - did HTTP Agent change at some point?

[indexzero]

I like this but it would be cleaner to check if it an object and if it is then make the same array from the keys instead of having a big if / else block

[davedoesdev]

@indexzero OK I updated it - is that along the lines you were thinking?

[davedoesdev]

Without this fix, I'm still getting:

    ✗ should be able to close the Connection 
      TypeError: this.agent.sockets.forEach is not a function 
      at Connection.cradle.Connection.close (/home/david/cradle/lib/cradle.js:173:24) 
      at Object.vows.describe.addBatch.Default connection settings.should be able to close the Connection (/home/david/cradle/test/connection-test.js:29:15) 
      at runTest (/home/david/cradle/node_modules/vows/lib/vows.js:136:26) 
      at EventEmitter.<anonymous> (/home/david/cradle/node_modules/vows/lib/vows.js:81:9) 
      at emitOne (events.js:82:20) 
      at EventEmitter.emit (events.js:169:7) 
      at EventEmitter.options.Emitter.emit (/home/david/cradle/node_modules/vows/lib/vows.js:241:24) 
      at /home/david/cradle/node_modules/vows/lib/vows/suite.js:170:45 
      at nextTickCallbackWith0Args (node.js:415:9) 
      at process._tickCallback (node.js:344:13)