Use safer sizeof variant in malloc

For a local variable:
        TYPE *p;
Allocations like this are "risky":
        p = OPENSSL_malloc(sizeof(TYPE));
if the type of p changes, and the malloc call isn't updated, you
could get memory corruption.  Instead do this:
        p = OPENSSL_malloc(sizeof(*p));
Also fixed a few memset() calls that I noticed while doing this.

Reviewed-by: Richard Levitte <levitte@openssl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/dh/dh_pmeth.c b/crypto/dh/dh_pmeth.c
index be44c0b201..1e1036491e 100644
--- a/crypto/dh/dh_pmeth.c
+++ b/crypto/dh/dh_pmeth.c
@@ -98,7 +98,7 @@ typedef struct {
 static int pkey_dh_init(EVP_PKEY_CTX *ctx)
 {
     DH_PKEY_CTX *dctx;
-    dctx = OPENSSL_malloc(sizeof(DH_PKEY_CTX));
+    dctx = OPENSSL_malloc(sizeof(*dctx));
     if (!dctx)
         return 0;
     dctx->prime_len = 1024;