build: swallow grep failure in when no C files present

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: passed
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: Planeshifter

.github/workflows/scripts/package_commands_comment

@@ -141,7 +141,7 @@ main() {
 	debug_log "Found $(echo "${files}" | wc -l) changed files"
 
 	# Extract files associated with native add-ons:
-	c_files=$(echo "${files}" | grep -e '/benchmark/c' -e '/examples/c' -e '/binding.gyp' -e '/include.gypi' -e '/src/')
+	c_files=$(echo "${files}" | grep -e '/benchmark/c' -e '/examples/c' -e '/binding.gyp' -e '/include.gypi' -e '/src/' || true)
 	if [[ -z "${c_files}" ]]; then
 		debug_log "No native add-on files found"
 	else