!10068 Fix SampledSoftmaxLoss stuck issue

From: @jonwe
Reviewed-by: @tom__chen,@robingrosman
Signed-off-by:

mindspore/ccsrc/backend/kernel_compiler/gpu/random/uniform_candidate_sampler_gpu_kernel.h

@@ -96,7 +96,7 @@ class UniformCandidateSamplerGpuKernel : public GpuKernel {
       return false;
     }
     input_size_ = input_shape[0] * input_shape[1];
-    if (num_sampled_ * num_true_ + static_cast<int64_t>(input_size_) > range_max_ * num_true_) {
+    if (num_sampled_ + static_cast<int64_t>(input_size_) > range_max_) {
       remove_accidental_hits_ = false;
     }
     InitSizeLists();