fix: sanitizer checks fix (iteration 2)

src/vm/fzl_vm.c

@@ -660,7 +660,7 @@ int fzl_vm_run(fzl_vm_t *vm)
 
       case FZL_OPCODE_JMP:
       {
-        if (vm->ops_count >= vm->ip)
+        if (vm->ops_count <= vm->ip)
         {
           snprintf(last_err, sizeof(last_err),
                    "runtime error - expected JMP addr");
@@ -1011,6 +1011,9 @@ void fzl_freevm(fzl_vm_t *vm)
   if (!vm)
     return;
 
+  while (vm->etop > 0)
+    fzl_freeenv(vm->estack[--vm->etop]);
+
   for (size_t i = 0; i < vm->consts_count; i++)
   {
     if (vm->consts[i].type == FZL_CONSTTYPE_STRING)