move the callback out of lock

src/util/src/tref.c

@@ -429,11 +429,6 @@ static int taosDecRefCount(int rsetId, int64_t rid, int remove) {
       if (pNode->next) {
         pNode->next->prev = pNode->prev; 
       } 
-		
-      (*pSet->fp)(pNode->p); 
-
-      uTrace("rsetId:%d p:%p rid:%" PRId64 "is removed, hash:%d count:%d, free mem: %p", rsetId, pNode->p, rid, hash, pSet->count, pNode);
-      free(pNode);
       released = 1;
     } else {
       uTrace("rsetId:%d p:%p rid:%" PRId64 "is released, hash:%d count:%d", rsetId, pNode->p, rid, hash, pSet->count);
@@ -446,7 +441,14 @@ static int taosDecRefCount(int rsetId, int64_t rid, int remove) {
 
   taosUnlockList(pSet->lockedBy+hash);
 
-  if (released) taosDecRsetCount(pSet);
+  if (released) {
+    (*pSet->fp)(pNode->p); 
+
+    uTrace("rsetId:%d p:%p rid:%" PRId64 "is removed, hash:%d count:%d, free mem: %p", rsetId, pNode->p, rid, hash, pSet->count, pNode);
+    free(pNode);
+
+    taosDecRsetCount(pSet);
+  }
 
   return code;
 }