PVS-Studio warning V629 for JUCE

typedef __int64 ogg_int64_t;

ogg_int64_t pcm_offset;

int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos){
  ....
  int hs = ....;
  long samples=....;
  ....
  vf->pcm_offset+=samples<<hs;
  ....
}

This suspicious code was found in JUCE project by PVS-Studio static code analyzer.
Warning message is:
V629 Consider inspecting the 'samples << hs' expression. Bit shifting of the 32-bit value with a subsequent expansion to the 64-bit type. vorbisfile.c 1676

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