Fix mkl-dnn tautological compare error (#21371)
Summary:
```
../third_party/ideep/mkl-dnn/src/cpu/jit_avx512_common_convolution.hpp:144:821: error: self-comparison always evaluates to true [-Werror,-Wtautological-compare]
virtual pd_t *clone() const override { return new pd_t(*this); } virtual status_t create_primitive(primitive_t **primitive, const primitive_at_t *inputs, const primitive_t **outputs) const override { double ms = get_msec(); primitive_t::input_vector ins(inputs, inputs + this->n_inputs()); primitive_t::outpu
t_vector outs(outputs, outputs + this->n_outputs()); auto ret = safe_ptr_assign<primitive_t>(*primitive, new (jit_avx512_common_convolution_bwd_data_t)(this, ins, outs)); ms = get_msec() - ms; if (mkldnn_verbose()->level >= 2) { printf("mkldnn_verbose,create,%s,%g\n", this->info(), ms); fflush(0); } return ret; } v
irtual const char *name() const override { return (avx512_common == sse42 ? "jit:" "sse42" : (avx512_common == avx ? "jit:" "avx" : (avx512_common == avx2 ? "jit:" "avx2" : (avx512_common == avx512_common ? "jit:" "avx512_common" : (avx512_common == avx512_core ? "jit:" "avx512_core" : (avx512_common == avx512_mic
? "jit:" "avx512_mic" : (avx512_common == avx512_mic_4ops ? "jit:" "avx512_mic_4ops" : "jit:" ""))))))); };
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21371
Differential Revision: D15631392
Pulled By: bddppq
fbshipit-source-id: 3b0008acab8ae53ce61327686bd8367e7fb5d298
