Fix incorrect usage of Try::Tiny

[genio]

As was pointed out in Issue #107 an error was introduced with moving from raw evals to Try::Tiny within LWP::UserAgent->simple_request.

This fix should accurately trap the errors and return the error response when found. Also, a few new tests were added to t/base/ua.t to test the ways in which the call to ->prepare_request can die from within ->simple_request.

[skington]

There's at least one other similar bug.

[genio]

@skington I'll move the next call outside of the catch block.

[skington]

That's not the problem I was referring to; rather, you have a return statement inside a catch block, which won't actually return from sub request, so instead it will return $response instead, which was not what was intended.

[genio]

@skington Ah. I can see where you'd think that. However, the mix of tabs and spaces are throwing off where you're seeing the end of the catch {} block. That block ends here:

libwww-perl/lib/LWP/UserAgent.pm

Line 401 in 2c94749

};