Fix nil panic in concurrentFind (!5248) · Merge requests · Administrator / sourcegraph

Administrator requested to merge 5246-nil-check into master Aug 16, 2019

Created by: ijt

Fixes #5246

This PR makes sure that if the re field of the readerGrep is nil in concurrentFind then FindZip will not be called, preventing the nil panic reported in the issue.

Test plan: Added a unit test that reproduces the nil panic.

Fix nil panic in concurrentFind

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