Fix leaked reference count to dict

src/dict.cpp

@@ -526,9 +526,6 @@ void dictCompleteRehashAsync(dictAsyncRehashCtl *ctl, bool fFree) {
 
     if (fFree) {
         d->type->asyncfree(ctl);
-
-        // Remove our reference
-        dictRelease(d);
     }
 }
 
@@ -548,6 +545,7 @@ dictAsyncRehashCtl::~dictAsyncRehashCtl() {
         zfree(deGCList);
         deGCList = next;
     }
+    dictRelease(this->dict);
 }
 
 /* Rehash in ms+"delta" milliseconds. The value of "delta" is larger