Fixes unused argument build error seen on CrossWorks (Issue #255).

wolfcrypt/benchmark/benchmark.c

@@ -238,11 +238,12 @@ static const XGEN_ALIGN byte iv[] =
 int main(int argc, char** argv)
 
 {
-  (void)argc;
-  (void)argv;
+    (void)argc;
+    (void)argv;
 #else
 int benchmark_test(void *args) 
 {
+    (void)args;
 #endif
 
     wolfCrypt_Init();

wolfcrypt/src/aes.c

@@ -1512,6 +1512,8 @@ static void wc_AesDecrypt(Aes* aes, const byte* inBlock, byte* outBlock)
         int ret;
         byte *rk = (byte*)aes->key;
 
+        (void)dir;
+
         if (!((keylen == 16) || (keylen == 24) || (keylen == 32)))
             return BAD_FUNC_ARG;