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, 3 deletions

diff --git a/test/ecdsatest.c b/test/ecdsatest.c
index 6aeff25d32..377e2c5367 100644
--- a/test/ecdsatest.c
+++ b/test/ecdsatest.c
@@ -318,9 +318,7 @@ int test_builtin(BIO *out)
 
     /* get a list of all internal curves */
     crv_len = EC_get_builtin_curves(NULL, 0);
-
-    curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len);
-
+    curves = OPENSSL_malloc(sizeof(*curves) * crv_len);
     if (curves == NULL) {
         BIO_printf(out, "malloc error\n");
         goto builtin_err;