src: cpu: matmul: bf16, int8: workaround for gcc build with std c++14

Author: igorsafo

src/cpu/matmul/gemm_bf16_matmul.cpp

@@ -195,7 +195,7 @@ status_t gemm_bf16_matmul_t<dst_type>::execute_ref(
 
     const bool parallel_over_batch = batch > 1;
     if (parallel_over_batch) {
-        parallel(parallel_over_batch ? 0 : 1, [&](int ithr, int nthr) {
+        parallel(parallel_over_batch ? 0 : 1, [=](int ithr, int nthr) {
             size_t batch_start {}, batch_end {};
             balance211((size_t)(batch), nthr, ithr, batch_start, batch_end);
 

src/cpu/matmul/gemm_x8s8s32x_matmul.cpp

@@ -225,7 +225,7 @@ status_t gemm_x8s8s32x_matmul_t<src_type, weights_type, dst_type>::execute_ref(
 
     const bool parallel_over_batch = batch > 1;
     if (parallel_over_batch) {
-        parallel(parallel_over_batch ? 0 : 1, [&](int ithr, int nthr) {
+        parallel(parallel_over_batch ? 0 : 1, [=](int ithr, int nthr) {
             size_t batch_start {}, batch_end {};
             balance211((size_t)(batch), nthr, ithr, batch_start, batch_end);