cumsum cpu kernel codedex

mindspore/ccsrc/backend/kernel_compiler/cpu/cumsum_cpu_kernel.cc

@@ -222,9 +222,13 @@ void CumSumCPUKernel::LaunchKernel(const std::vector<kernel::AddressPtr> &inputs
   std::vector<std::thread> threads;
   threads.reserve(thread_num);
   size_t start = 0;
+  if (thread_num < 1) {
+    MS_LOG(ERROR) << "Invalid value: thread_num " << thread_num;
+    return;
+  }
   size_t once_compute_size = (lens + thread_num - 1) / thread_num;
-  if (thread_num < 1 || once_compute_size < 1) {
-    MS_LOG(ERROR) << "Invalid value: thread_num " << thread_num << "; once_compute_size " << once_compute_size;
+  if (once_compute_size < 1) {
+    MS_LOG(ERROR) << "Invalid value: once_compute_size " << once_compute_size;
     return;
   }
   while (start < lens) {