Fix jake -T for directory tasks

[falsefalse]

Not sure if exactly directory or packageTask related, I have both and it breaks when I jake -T, all tasks run well still.

So looks like it needs not to break in the negative case for the regexp, when nothing was matched. This fixes the problem.

Logged this.action and this.action.name and this.action.toString() values that break it.

$ jake -T
[Function: action]
{
  name: 'action',
  string: 'function () {\n          jake.mkdirP(name);\n        }'
}

Original stacktrace

TypeError: Cannot read properties of undefined (reading 'replace')
    at DirectoryTask._getParams (/Users/falsefalse/.nvm/versions/node/v16.16.0/lib/node_modules/jake/lib/task/task.js:426:10)
    at DirectoryTask.get params [as params] (/Users/falsefalse/.nvm/versions/node/v16.16.0/lib/node_modules/jake/lib/task/task.js:97:17)
    at EventEmitter.Object.assign.showAllTaskDescriptions (/Users/falsefalse/.nvm/versions/node/v16.16.0/lib/node_modules/jake/lib/jake.js:127:27)
    at Program.run (/Users/falsefalse/.nvm/versions/node/v16.16.0/lib/node_modules/jake/lib/program.js:250:19)
    at EventEmitter.Object.assign.run (/Users/falsefalse/.nvm/versions/node/v16.16.0/lib/node_modules/jake/lib/jake.js:323:17)
    at Object.<anonymous> (/Users/falsefalse/.nvm/versions/node/v16.16.0/lib/node_modules/jake/bin/cli.js:31:10)
    at Module._compile (node:internal/modules/cjs/loader:1105:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)

[mde]

Awesome, thank you!