tools: improve error handling in node_mksnapshot

tools: improve error handling in node_mksnapshot · nodejs/node@6696d1d

Original file line number	Diff line number	Diff line change
`@@ -66,8 +66,16 @@ int BuildSnapshot(int argc, char* argv[]) {`
`66`	`66`	`std::vector<std::string>(argv, argv + argc),`
`67`	`67`	`node::ProcessInitializationFlags::kGeneratePredictableSnapshot);`
`68`	`68`
	`69`	`+if (result->exit_code() != 0) {`
	`70`	`+for (const std::string& error : result->errors()) {`
	`71`	`+ std::cerr << error << "\n";`
	`72`	`+ }`
	`73`	`+ std::cerr << "node_mksnapshot failed with exit code " << result->exit_code()`
	`74`	`+<< "\n";`
	`75`	`+return static_cast<int>(result->exit_code());`
	`76`	`+ }`
	`77`	`+`
`69`	`78`	`CHECK(!result->early_return());`
`70`		`-CHECK_EQ(result->exit_code(), 0);`
`71`	`79`
`72`	`80`	`std::string out_path;`
`73`	`81`	`std::optional<std::string_view> builder_script_path = std::nullopt;`