message: Vulkan: use FixedCapacityVector in one more spot.
diff: #include <utils/compiler.h>
  #include <utils/Allocator.h>
  +#include <utils/FixedCapacityVector.h>
  #include <unordered_map>
  -#include <vector>
  namespace filament {
  namespace backend {
  @@ -81,7 +81,7 @@ private:
  // For now we're not bothering to store handles in pools, just simple on-demand allocation.
  // We have a little map from integer handles to "blobs" which get replaced with the Hw objects.
  - using Blob = std::vector<uint8_t>;
  + using Blob = utils::FixedCapacityVector<uint8_t>;
  using HandleMap = std::unordered_map<HandleBase::HandleId, Blob>;
  HandleMap mHandleMap;
  std::mutex mHandleMapMutex;
  @@ -90,7 +90,7 @@ private:
  template<typename Dp, typename B>
  Handle<B> alloc_handle() {
  std::lock_guard<std::mutex> lock(mHandleMapMutex);
  - mHandleMap[mNextId] = Blob(sizeof(Dp));
  + mHandleMap[mNextId] = Blob(sizeof(Dp), 0);
  return Handle<B>(mNextId++);
  }
  