Warning comparison of integer expressions of different signedness

[fire]

./thirdparty/manifold/src/manifold/include/manifold.h: In member function 'uint32_t manifold::MeshGL::NumVert() const':
Error: ./thirdparty/manifold/src/manifold/include/manifold.h:50:41: error: comparison of integer expressions of different signedness: 'std::vector<float>::size_type' {aka 'long unsigned int'} and 'int' [-Werror=sign-compare]
   50 |     if (vertProperties.size() / numProp >= std::numeric_limits<int>::max())
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./thirdparty/manifold/src/manifold/include/manifold.h: In member function 'uint32_t manifold::MeshGL::NumTri() const':
Error: ./thirdparty/manifold/src/manifold/include/manifold.h:56:41: error: comparison of integer expressions of different signedness: 'std::vector<float>::size_type' {aka 'long unsigned int'} and 'int' [-Werror=sign-compare]
   56 |     if (vertProperties.size() / numProp >= std::numeric_limits<int>::max())
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~