Add missing blank line between functions.

Change-Id: I4bab5fe860e7bf2c2bdf11552d60a2e10c55d227
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52565
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>

crypto/fipsmodule/sha/sha256.c

@@ -161,6 +161,7 @@ int SHA256_Final(uint8_t out[SHA256_DIGEST_LENGTH], SHA256_CTX *c) {
   // TODO(davidben): Add an assert and fix code to match them up.
   return sha256_final_impl(out, c);
 }
+
 int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH], SHA256_CTX *ctx) {
   // SHA224_Init sets |ctx->md_len| to |SHA224_DIGEST_LENGTH|, so this has a
   // smaller output.