warning fix for small PSK build

src/internal.c

@@ -26678,7 +26678,9 @@ static int ParseCipherList(Suites* suites,
         suites->setSuites = 1;
     }
 
+#ifdef NO_CERTS
     (void)privateKeySz;
+#endif
 
     return ret;
 }

wolfssl/openssl/bn.h

@@ -40,7 +40,9 @@
 typedef struct WOLFSSL_BIGNUM {
     int neg;        /* openssh deference */
     void *internal; /* our big num */
+#ifndef NO_BIG_INT
     mp_int mpi;
+#endif
 } WOLFSSL_BIGNUM;
 
 #define WOLFSSL_BN_ULONG unsigned long