Fix a couple of missing spaces in comments.

Change-Id: If8b5dea31d7f37b3b33ea41e7a6a33240cb5ee5b
Reviewed-on: https://boringssl-review.googlesource.com/13121
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/pool.h b/include/openssl/pool.h
index 23debf0..dc5c938 100644
--- a/include/openssl/pool.h
+++ b/include/openssl/pool.h
@@ -26,7 +26,7 @@
  *
  * |CRYPTO_BUFFER|s are simply reference-counted blobs. A |CRYPTO_BUFFER_POOL|
  * is an intern table for |CRYPTO_BUFFER|s. This allows for a single copy of a
- * given blob to be kept in memory and referenced from multiple places.*/
+ * given blob to be kept in memory and referenced from multiple places. */
 
 
 /* CRYPTO_BUFFER_POOL_new returns a freshly allocated |CRYPTO_BUFFER_POOL| or