Fix type casting for psk_keySz in MakePSKPreMasterSecret and initialize newSz in PKCS12_ConcatenateContent

Author: julek-wolfssl

src/internal.c

@@ -31011,7 +31011,7 @@ static void MakePSKPreMasterSecret(Arrays* arrays, byte use_psk_key)
             XMEMSET(pms, 0, sz);
             pms += sz;
         }
-        c16toa(arrays->psk_keySz, pms);
+        c16toa((word16)arrays->psk_keySz, pms);
         pms += OPAQUE16_LEN;
         XMEMCPY(pms, arrays->psk_key, arrays->psk_keySz);
         arrays->preMasterSz = sz + arrays->psk_keySz + OPAQUE16_LEN * 2;

wolfcrypt/src/pkcs12.c

@@ -1147,7 +1147,7 @@ static byte* PKCS12_ConcatenateContent(WC_PKCS12* pkcs12,byte* mergedData,
 {
     byte* oldContent;
     word32 oldContentSz;
-    word32 newSz;
+    word32 newSz = 0;
 
     (void)pkcs12;