message: core: fix mm_pause() for non-SSE i386 builds
  replaced to safe binary compatible 'rep; nop' asm instruction
diff: @@ -50,6 +50,10 @@ DECLARE_CV_PAUSE
  #endif
  #ifndef CV_PAUSE
  # if defined __GNUC__ && (defined __i386__ || defined __x86_64__)
  +# if !defined(__SSE__)
  + static inline void cv_non_sse_mm_pause() { __asm__ __volatile__ ("rep; nop"); }
  +# define _mm_pause cv_non_sse_mm_pause
  +# endif
  # define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { _mm_pause(); } } while (0)
  # elif defined __GNUC__ && defined __aarch64__
  # define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("yield" ::: "memory"); } } while (0)
  