chore: revert the code change

source/dnode/vnode/src/vnd/vnodeBufPool.c

@@ -115,7 +115,6 @@ void *vnodeBufPoolMalloc(SVBufPool *pPool, int size) {
   ASSERT(pPool != NULL);
 
   taosThreadSpinLock(&pPool->lock);
-
   if (pPool->node.size >= pPool->ptr - pPool->node.data + size) {
     // allocate from the anchor node
     p = pPool->ptr;
@@ -139,7 +138,6 @@ void *vnodeBufPoolMalloc(SVBufPool *pPool, int size) {
 
     pPool->size = pPool->size + sizeof(*pNode) + size;
   }
-
   taosThreadSpinUnlock(&pPool->lock);
   return p;
 }