fix mem leak

source/libs/stream/src/streamMeta.c

@@ -641,15 +641,14 @@ void metaHbToMnode(void* param, void* tmrId) {
 
   tEncodeSize(tEncodeStreamHbMsg, &hbMsg, tlen, code);
   if (code < 0) {
-    taosArrayDestroy(hbMsg.pTaskStatus);
     qError("vgId:%d encode stream hb msg failed, code:%s", pMeta->vgId, tstrerror(code));
+    taosArrayDestroy(hbMsg.pTaskStatus);
     return;
   }
 
   void* buf = rpcMallocCont(tlen);
   if (buf == NULL) {
     qError("vgId:%d encode stream hb msg failed, code:%s", pMeta->vgId, tstrerror(TSDB_CODE_OUT_OF_MEMORY));
-
     taosArrayDestroy(hbMsg.pTaskStatus);
     return;
   }
@@ -659,7 +658,6 @@ void metaHbToMnode(void* param, void* tmrId) {
   if ((code = tEncodeStreamHbMsg(&encoder, &hbMsg)) < 0) {
     rpcFreeCont(buf);
     qError("vgId:%d encode stream hb msg failed, code:%s", pMeta->vgId, tstrerror(code));
-
     taosArrayDestroy(hbMsg.pTaskStatus);
     return;
   }