Requires spaces after keyword in block statements

```javascript
while () {
 // code
}
for (var key in keys) {
 // code
}
for (var i = 0) {
 // code
}
switch () {
 // code
}
if () {
 // code
} else {
 // code
}
```
Merge pull request #10073 from twokul/block-statements-spaces

Requires spaces after keyword in block statements