Add missing newline in newhope.h.

doc.go is still a little unhappy.

Change-Id: I5a8f3da91dabb45d29d0e08f13b7dabdcd521c38
Reviewed-on: https://boringssl-review.googlesource.com/8145
Reviewed-by: David Benjamin <davidben@google.com>
diff --git a/include/openssl/newhope.h b/include/openssl/newhope.h
index a17324a..487e03f 100644
--- a/include/openssl/newhope.h
+++ b/include/openssl/newhope.h
@@ -139,6 +139,7 @@
     NEWHOPE_POLY *out_pk, NEWHOPE_POLY *out_a,
     const uint8_t msg[NEWHOPE_OFFERMSG_LENGTH]);
 
+
 #if defined(__cplusplus)
 } /* extern "C" */
 #endif