message: fix: version args parsing
diff: @@ -543,10 +543,12 @@ function parseVersionJson(versionString: string, root: string, fillArgs?: boolea
  const libraries = resolveLibraries(parsed.libraries, platform);
  let args = parsed.arguments;
  if (!args) {
  - if (fillArgs) {
  args = {
  - game: parsed.minecraftArguments!.split(" "),
  - jvm: [
  + game: parsed.minecraftArguments
  + ? parsed.minecraftArguments.split(" ")
  + : [],
  + jvm: fillArgs
  + ? [
  {
  rules: [
  {
  @@ -591,14 +593,9 @@ function parseVersionJson(versionString: string, root: string, fillArgs?: boolea
  "-Dminecraft.launcher.version=${launcher_version}",
  "-cp",
  "${classpath}",
  - ],
  + ]
  + : [],
  };
  - } else {
  - args = {
  - jvm: [],
  - game: [],
  - };
  - }
  }
  args.jvm = processArguments(args.jvm || []);
  