suite: fix panic if a WithStats suite skips a test early #1802
      
        
          +30
        
        
          −2
        
        
          
        
      
    
  
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
Summary
Continues work from #1723 by @FGasper .
This PR rebases with the latest master.
This fixes issue #1722.
Changes
Prevent stats.end() if stats.start() never ran.
Motivation
Allow skipping a test in a setup/before hook. See issue #1722 for an example.
Related issues
Closes #1722