pseudos: Compare against "text" instead of accessing el.type again

* Use "text" instead of el.type, should perform slightly better
  as it doesn't access the DOM and seems to also gzip slightly
  better though that can vary over time with context.

* Added missing space (unbalanced).

----

```
   raw     gz Compared to master @ 5efc23fa10    
    -2     +1 dist/sizzle.js                                                   
     =     -1 dist/sizzle.min.js        
```