Update emscripten.yml

Author: mcbarton

.github/workflows/emscripten.yml

@@ -832,6 +832,10 @@ jobs:
         emrun.bat --browser="firefox.exe" --kill_exit --timeout 60 --browser-args="--headless"  DynamicLibraryManagerTests.html
         echo "Running CppInterOpTests in Chromium"
         emrun.bat --browser="chrome.exe" --kill_exit --timeout 60 --browser-args="--headless"  CppInterOpTests.html
+        if ($LASTEXITCODE -ne 0) {
+          Write-Error "Command failed with exit code $LASTEXITCODE"
+          exit $LASTEXITCODE
+        }
         echo "Running DynamicLibraryManagerTests in Chromium"
         emrun.bat --browser="chrome.exe" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  DynamicLibraryManagerTests.html
         cd ..\..