Steps to reproduce:
1. Create a job that generates and displays any sort of valid junit output
2. Create a dashboard view with the test statistics portlet and associate the new job
3. Run the job so that test results are populated in the grid
4. Edit the job config's build commands to force a build execution failure. (This is to simulate the event that the job doesn't run successfully.)

Expected:
Test Statistics Grid/Chart should display no test results for the most recent build that failed (ei, 0 success, 0 fail, 0 skipped, 0 total)

Actual:
Test Statistics Grid/Chart displays the test results of the last successful build even through the job state itself is "Failed"