check empty dnode

source/dnode/mnode/impl/src/mndDnode.c

@@ -986,20 +986,20 @@ static int32_t mndProcessDropDnodeReq(SRpcMsg *pReq) {
   }
 
   int32_t numOfVnodes = mndGetVnodesNum(pMnode, pDnode->id);
-  if (numOfVnodes > 0 || pMObj != NULL || pSObj != NULL || pQObj != NULL) {
-    bool isonline = mndIsDnodeOnline(pDnode, taosGetTimestampMs());
-    if (isonline && force) {
-      terrno = TSDB_CODE_DNODE_ONLY_USE_WHEN_OFFLINE;
-      mError("dnode:%d, failed to drop since %s, vnodes:%d mnode:%d qnode:%d snode:%d", pDnode->id, terrstr(),
-             numOfVnodes, pMObj != NULL, pQObj != NULL, pSObj != NULL);
-      goto _OVER;
-    }
-    if (!isonline && !force) {
-      terrno = TSDB_CODE_DNODE_OFFLINE;
-      mError("dnode:%d, failed to drop since %s, vnodes:%d mnode:%d qnode:%d snode:%d", pDnode->id, terrstr(),
-             numOfVnodes, pMObj != NULL, pQObj != NULL, pSObj != NULL);
-      goto _OVER;
-    }
+  bool isonline = mndIsDnodeOnline(pDnode, taosGetTimestampMs());
+  
+  if (isonline && force) {
+    terrno = TSDB_CODE_DNODE_ONLY_USE_WHEN_OFFLINE;
+    mError("dnode:%d, failed to drop since %s, vnodes:%d mnode:%d qnode:%d snode:%d", pDnode->id, terrstr(),
+            numOfVnodes, pMObj != NULL, pQObj != NULL, pSObj != NULL);
+    goto _OVER;
+  }
+
+  if (!isonline && !force) {
+    terrno = TSDB_CODE_DNODE_OFFLINE;
+    mError("dnode:%d, failed to drop since %s, vnodes:%d mnode:%d qnode:%d snode:%d", pDnode->id, terrstr(),
+            numOfVnodes, pMObj != NULL, pQObj != NULL, pSObj != NULL);
+    goto _OVER;
   }
 
   code = mndDropDnode(pMnode, pReq, pDnode, pMObj, pQObj, pSObj, numOfVnodes, force, dropReq.unsafe);