_dictExpandIfNeeded is called too late to be useful

Former-commit-id: 7f75ca5d3a9ed47465bceb22f5f74fd6f0760008

src/dict.cpp

@@ -681,6 +681,7 @@ static dictEntry *dictGenericDelete(dict *d, const void *key, int nofree) {
                     }
                 }
                 d->ht[table].used--;
+                _dictExpandIfNeeded(d);
                 return he;
             }
             prevHe = he;
@@ -689,7 +690,6 @@ static dictEntry *dictGenericDelete(dict *d, const void *key, int nofree) {
         if (!dictIsRehashing(d)) break;
     }
 
-    _dictExpandIfNeeded(d);
     return NULL; /* not found */
 }