(HMAC_CTX_cleanup): destroy the EVP_MD_CTX, so it will be freed.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18470 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/des/hmac.c

@@ -28,7 +28,10 @@ HMAC_CTX_cleanup(HMAC_CTX *ctx)
 	free(ctx->ipad);
 	ctx->ipad = NULL;
     }
-    EVP_MD_CTX_cleanup(ctx->ctx);
+    if (ctx->ctx) {
+	EVP_MD_CTX_destroy(ctx->ctx);
+	ctx->ctx = NULL;
+    }
 }
 
 size_t