Merge pull request #9514 from kareem-wolfssl/zd20936

Fix uninitialized variable, fix potentially undefined printf reference in HASH_DRBG_Generate.

Author: JacobBarthelmeh

src/internal.c

@@ -33365,7 +33365,7 @@ static int AddPSKtoPreMasterSecret(WOLFSSL* ssl)
 static void MakePSKPreMasterSecret(Arrays* arrays, byte use_psk_key)
 {
     byte* pms = arrays->preMasterSecret;
-    word16 sz;
+    word16 sz = 0;
 
     /* sz + (use_psk_key ? sz 0s : sz unaltered) + length of psk + psk */
     if (!use_psk_key) {

wolfcrypt/src/random.c

@@ -631,9 +631,10 @@ static int Hash_DRBG_Generate(DRBG_internal* drbg, byte* out, word32 outSz)
     }
 
     if (drbg->reseedCtr >= WC_RESEED_INTERVAL) {
-    #if defined(DEBUG_WOLFSSL) || defined(DEBUG_DRBG_RESEEDS)
-        printf("DRBG reseed triggered, reseedCtr == %lu",
-               (unsigned long)drbg->reseedCtr);
+    #if (defined(DEBUG_WOLFSSL) || defined(DEBUG_DRBG_RESEEDS)) && \
+        defined(WOLFSSL_DEBUG_PRINTF)
+        WOLFSSL_DEBUG_PRINTF("DRBG reseed triggered, reseedCtr == %lu",
+                (unsigned long)drbg->reseedCtr);
     #endif
         return DRBG_NEED_RESEED;
     }