Destroy randomx VM when we are done with it

src/miner.cpp

@@ -1066,6 +1066,7 @@ void static RandomXMiner()
                                                                        }
                                                                        );
     randomx_flags flags         = randomx_get_flags();
+    // TODO: attempt to use large pages and fall back to no large pages
     // flags |= RANDOMX_FLAG_LARGE_PAGES;
     flags |= RANDOMX_FLAG_FULL_MEM;
     //flags |= RANDOMX_FLAG_JIT;
@@ -1175,8 +1176,6 @@ void static RandomXMiner()
 
             randomx_init_dataset(randomxDataset, randomxCache, 0, datasetItemCount);
             rxdebug("%s: dataset initialized\n");
-            // randomx_release_cache(randomxCache);
-            // rxdebug("%s: cache released\n");
 
             randomx_vm *myVM = randomx_create_vm(flags, nullptr, randomxDataset);
             if(myVM == NULL) {
@@ -1286,9 +1285,6 @@ void static RandomXMiner()
                     printf("\n");
                 }
 
-                //randomx_destroy_vm(myVM);
-                //rxdebug("%s: destroyed VM\n");
-
                 // Use randomx hash to build a valid block
                 std::function<bool(std::vector<unsigned char>)> validBlock =
 #ifdef ENABLE_WALLET
@@ -1396,6 +1392,11 @@ void static RandomXMiner()
                     pblock->nNonce = ArithToUint256(UintToArith256(pblock->nNonce) + 1);
                     pblock->nBits = savebits;
                 }
+
+                rxdebug("%s: going to destroy rx VM\n");
+                randomx_destroy_vm(myVM);
+                rxdebug("%s: destroyed VM\n");
+
             }