When an empty Unity build is running on iOS 10.3 device, with Xcode attached, memory is continuously leaked by 'VM: Performance tool data'.

Steps to reproduce:
1) Create a new project.
2) Build for iOS.
3) Run on iOS 10.3 device via Xcode.
- The memory consumption can already be seen in Debug section of Xcode.
4) Transfer the build to Instruments.

Notice the memory usage growth in 'VM: Performance tool data'. 544/32 kB are allocated repeatedly. libBacktraceRecording.dylib is responsible for the calls. If the app is launched from Instruments directly, the leak doesn't occur.

Reproduced on:
5.6.0b8, 5.6.0b3, 5.5.1p4

Did not reproduce 5.4.4p3

Devices:
iPhone 6S iOS 10.3
iPhone 7 iOS 10.3 - reproduced
iPhone 5S iOS 9.3.3 - did not reproduce
iPhone 5 iOS 10.1 - did not reproduce