Fix incorrect specification of directory contents in read dir resp [AP-945] #1379

Job	Run time
Ubuntu 18.04 (Build: Debug, Compilers: gcc-6/g++-6, Shared Library: true)	6m 38s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	6m 51s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	6m 19s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: true)	8m 29s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: false)	8m 26s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	7m 57s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	7m 50s
Bazel	2m 40s
Test Big Endian	4m 43s
macOS	19m 31s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: true)	11m 22s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: false)	11m 10s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: true)	5m 10s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: false)	5m 21s
	1h 52m 27s

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