vulkaninfo: Fix closing immediately on windows
vulkaninfo: Fix closing immediately on windows

On windows the console window will immediately close after running
vulkaninfo, this fixes it.

Change-Id: Ic5a86ffb89508d874d9609ed1b4d9222a31798c4

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools