Revert (and fix properly) "Uninitialize the file descriptor."

Revert (and fix properly) "Uninitialize the file descriptor."

This reverts commit f514b0e144db063931d19a8ebc2dc42083d0eb2f.

The culprit is that InEC is initialized before Inbound, and Inbound's
initialization happens through a call to openFileForRead. However, the
typical initialization order warnings don't fire; so the behavior was:
Inbound is initialized correctly by openFileForRead; then it's reset to
whatever initializer value (0 originally).

A fix is to move Inbound's decl upfront. I'd still prefer initializing
it to something - and -1 seems like a more appropriate value (it causes
a fail-fast rather than a hang due to trying to read from a
valid-looking but unopen fd).