PVS-Studio warning V535 for OGRE

void EdgeListBuilder::log(Log* l)
{
  ...
  size_t i, j;
  for(i = 0; i < mGeometryList.size(); i++)
  {
    ...
    for (i = 0; i < mVertices.size(); ++i)
    {
      CommonVertex& c = mVertices[i];
      ...
    }
  }
}

This suspicious code was found in OGRE project by PVS-Studio static code analyzer.
Warning message is:
V535 The variable 'i' is being used for this loop and for the outer loop. OgreMain ogreedgelistbuilder.cpp 587

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/