release 2025-07-17
re2: allow and test RE2(NULL) RE2(NULL) has always worked. Make sure it keeps working. Change-Id: I999c69d04e71fa31a2f40cd834c47b328039ed3d Reviewed-on: https://code-review.googlesource.com/c/re2/+/63631 Reviewed-by: Alan Donovan <adonovan@google.com>