Typos
PR: 1578
Submitted by: Charles Longeau <chl@tuxfamily.org>

crypto/dh/dh_check.c

diff --git a/crypto/dh/dh_check.c b/crypto/dh/dh_check.c
index 10217c8..0668981 100644
--- a/crypto/dh/dh_check.c
+++ b/crypto/dh/dh_check.c
@@ -62,7 +62,7 @@
 #include <openssl/dh.h>
 
 /* Check that p is a safe prime and
- * if g is 2, 3 or 5, check that is is a suitable generator
+ * if g is 2, 3 or 5, check that it is a suitable generator
  * where
  * for 2, p mod 24 == 11
  * for 3, p mod 12 == 5