Fix a couple of format strings.
Fix a couple of format strings.

Change-Id: Iae1fbf0565e4d2f7b5f322d4e0a29e0e920460b4
Reviewed-on: https://code-review.googlesource.com/5554
Reviewed-by: Paul Wankadia <62d4e38bb1380f055ec4b899baa75e52af09c5f7@google.com>

google/re2,google/re2,google/re2,google/re2,google/re2