Hook ssl_stat.c into build.

Change-Id: I049b2ed1b83e38375ddb658abf588a8e3355acb8
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
Reviewed-on: https://boringssl-review.googlesource.com/1190
Reviewed-by: Adam Langley <agl@google.com>
1 file changed