fixes for -fsanitize=memory

Author: JacobBarthelmeh

src/benchmark/clu_benchmark.c

@@ -97,6 +97,7 @@ int wolfCLU_benchmark(int timer, int* option)
         wc_RNG_GenerateBlock(&rng, iv, AES_BLOCK_SIZE);
         start = wolfCLU_getTime();
 
+        wc_AesInit(&aes, HEAP_HINT, INVALID_DEVID);
         wc_AesSetKey(&aes, key, AES_BLOCK_SIZE, iv, AES_ENCRYPTION);
 
         while (loop) {
@@ -107,6 +108,7 @@ int wolfCLU_benchmark(int timer, int* option)
             /* if stop >= timer, loop = 0 */
             loop = (stop >= timer) ? 0 : 1;
         }
+        wc_AesFree(&aes);
         printf("\n");
         printf("AES-CBC ");
         wolfCLU_stats(start, AES_BLOCK_SIZE, blocks);

src/pkcs/clu_pkcs7.c

@@ -71,6 +71,8 @@ int wolfCLU_PKCS7(int argc, char** argv)
     int   derContentSz = 0;
     int   freePkcs7 = 0;
 
+    XMEMSET(&pkcs7, 0, sizeof(PKCS7));
+
     opterr = 0; /* do not display unrecognized options */
     optind = 0; /* start at indent 0 */
     while ((option = wolfCLU_GetOpt(argc, argv, "",