Minor update for Windows build.

Author: tatsy

.github/workflows/windows.yml

@@ -44,7 +44,6 @@ jobs:
         cd ${{ runner.workspace }}/build
         cmake "$env:GITHUB_WORKSPACE" `
           -G "Visual Studio 16 2019" -A x64 `
-          -DEIGEN3_INCLUDE_DIR="C:/Program Files/Eigen/include/eigen3" `
           -DGoogleTest_DIR="C:/Program Files/GoogleTest" `
           -DBUILD_TESTS=ON `
           -DBUILD_EXAMPLES=ON

src/tinymesh/core/mesh.cpp

@@ -127,7 +127,7 @@ void Mesh::construct() {
     }
 
     // Put vertex indices
-    for (size_t i = 0; i < vertices_.size(); i++) {
+    for (int i = 0; i < (int)vertices_.size(); i++) {
         vertices_[i]->index_ = i;
     }