Changed return code in getWindowHandle in winClicker.rb from nil to -1 to match what callers are expecting for a return code.
Changed return code in getWindowHandle in winClicker.rb from nil to -1 to match what callers
are expecting for a return code.

jarib/watir,watir/watir-classic,watir/watir-classic,watir/watir-classic,jarib/watir,jarib/watir,watir/watir-classic