Make vkEnumerate*ExtensionProperties conform to the Vulkan spec

Vulkan specifies that "on return the [pPropertyCount] is overwritten
with the number of structures actually written to pProperties," but this
wasn't happening.

Bug: 150953274
Test: presubmit
Merged-In: I9c576e05fa66eb2a1210c2b432d3ed20adf2cdd0
Change-Id: Iff26b63d77da0389ecf3b59fde72c1cac8d75472
Signed-off-by: Roman Kiryanov <rkir@google.com>
1 file changed