watchman: refactor transport connecting to unconfuse pytype
Pytype sees `self.proc` as potentially `None` here, even though it's set by the
`_connect()` logic. Instead of asserting, simply use the process returned by
that method (which it sets into `self.proc` before returning, so there's no
functional change here).
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}