Fix std::min in VmaBlockVector::ProcessDefragmentations
Fix std::min in VmaBlockVector::ProcessDefragmentations

Fixes #151 - thanks @rextimmy

GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator,GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator,GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator