!962 modify cast

From: @chen_yemeng
Reviewed-by: @wangxiaotian22,@xchu42
Signed-off-by: @wqtshg

ge/graph/manager/graph_var_manager.cc

@@ -302,7 +302,7 @@ Status RdmaMemResource::AssignVarMem(const std::string &var_name, uint64_t size,
     GELOGE(MEMALLOC_FAILED, "Failed to malloc rdma memory for node %s, size = %llu", var_name.c_str(), size);
     return MEMALLOC_FAILED;
   }
-  address = reinterpret_cast<size_t>(reinterpret_cast<uintptr_t>(buffer));
+  address = static_cast<size_t>(reinterpret_cast<uintptr_t>(buffer));
   var_mem_size_ += size;
   GELOGI("[IMAS]AssignVarMem Set session_%llu name[%s] output[%d] addr to [%p] size[%llu].",
          session_id, var_name.c_str(), 0, buffer, size);