Ensure a newline after locals declaration in compiled client functions.

For the case where debug information follows, I was receiving:
```
function template(locals) {
var jade_debug = [{ lineno: 1, filename: "../simple-jadeify/test/stuff/template.jade" }];
try {
var buf = [];
var jade_mixins = {};
var locals_ = (locals || {}),pageTitle = locals_.pageTitle,undefined = locals_.undefined,youAreUsingJade = locals_.youAreUsingJade;jade_debug.unshift({ lineno: 0, filename: "../simple-jadeify/test/stuff/template.jade" });
...
}
```
, with the lack of newline between `var locals` and `jade_debug.unshift(...)` making programmatically parsing the debug information difficult, aside from aesthetically being out of place with all the nicely newline-separated debug info.

PS: I seem to be consistently getting `lineno: 0` with debug output, which makes sourcemap generation difficult, since libraries like Mozilla [source-map](https://github.com/mozilla/source-map) [don't validate with lineno 0](https://github.com/mozilla/source-map/blob/master/lib/source-map/source-map-generator.js#L245)