Do not error when no crashes from fuzzing

.github/workflows/fuzz.yml

@@ -41,6 +41,7 @@ jobs:
           echo core | sudo tee /proc/sys/kernel/core_pattern
           # Hide verbose stdout (not stderr) logging.
           timeout 5h cargo afl fuzz -i in -o out target/debug/minify-html-fuzz-target > /dev/null || true
+          find ./out/crashes -type f | wc -l
 
       - name: Set up Backblaze B2 CLI
         uses: wilsonzlin/setup-b2@v3
@@ -49,4 +50,4 @@ jobs:
         working-directory: ./fuzz
         run: |
           b2 authorize-account ${{ secrets.CICD_CLI_B2_KEY_ID }} ${{ secrets.CICD_CLI_B2_APPLICATION_KEY }}
-          b2 sync ./out/creashes/ b2://${{ secrets.CICD_CLI_B2_BUCKET_NAME }}/minify-html/fuzz/$(git rev-parse --short HEAD)/crashes/
+          b2 sync --allowEmptySource ./out/crashes/ b2://${{ secrets.CICD_CLI_B2_BUCKET_NAME }}/minify-html/fuzz/$(git rev-parse --short HEAD)/crashes/