Update emscripten.yml

Author: mcbarton

.github/workflows/emscripten.yml

@@ -273,7 +273,9 @@ jobs:
         cd native_build
         cmake -DLLVM_ENABLE_PROJECTS=clang -DLLVM_TARGETS_TO_BUILD=host -DCMAKE_BUILD_TYPE=Release -G Ninja ../llvm/
         cmake --build . --target llvm-tblgen clang-tblgen --parallel $(nproc --all)
-        $env:NATIVE_DIR="$PWD/bin/"
+        find.exe .
+        $env:PWD_DIR= $PWD.Path
+        $env:NATIVE_DIR="$env:PWD_DIR/bin/"
         cd ..
         mkdir build
         if ( "${{ matrix.cling }}" -imatch "On" )