fixed coverity warning

ge/host_kernels/strided_slice_kernel.cc

@@ -221,7 +221,9 @@ Status StridedSliceKernel::InitParamWithAttrs(const std::vector<ConstGeTensorPtr
   // handle new_axis_mask
   ExpandDimsWithNewAxis(begin_tensor, x_dims_num, x_dims);
 
-  vector<int64_t> orig_begin_vec, orig_end_vec, orig_stride_vec;
+  vector<int64_t> orig_begin_vec;
+  vector<int64_t> orig_end_vec;
+  vector<int64_t> orig_stride_vec;
   GetOriginStrideVec(input, orig_begin_vec, orig_end_vec, orig_stride_vec);
   // calculate begin_mask & end_mask by ellipsis_mask
   ExpandStrideWithEllipsisMask(x_dims_num, x_dims, orig_begin_vec, orig_end_vec, orig_stride_vec);