Pelle Wessman 3e0958b033 fix: check for empty diff (#1273)
* Fix check for empty diff

Compare to the result of the latest diff module: https://runkit.com/embed/y4qzdzzz05qr

No diff gives this result:

```
Index: 
===================================================================
--- 	
+++ 	
```

* Actually check the right thing in the fix as well
2019-09-09 09:21:39 -07:00
..
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