Whitespace cleanup in crypto

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1264)
diff --git a/crypto/modes/ocb128.c b/crypto/modes/ocb128.c
index 54a96b8..c3bd13b 100644
--- a/crypto/modes/ocb128.c
+++ b/crypto/modes/ocb128.c
@@ -230,7 +230,7 @@
 
     /*
      * Spec says IV is 120 bits or fewer - it allows non byte aligned lengths.
-     * We don't support  this at this stage
+     * We don't support this at this stage
      */
     if ((len > 15) || (len < 1) || (taglen > 16) || (taglen < 1)) {
         return -1;