vulkaninfo: minor fix after review
vulkaninfo: minor fix after review

Changed
    for (unsigned int i = 0,...)
to
    for (uint32_t i i = 0,...)

for consistency with the rest of the file.

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