fix(scanner): ordering CPU time was wrong due to wrong waiting order #330

Job	Run time
windows (X64, Release)	10m 38s
windows (X64, Debug)	12m 58s
linux (amd64, gcc-debug-ninja)	2m 50s
linux (amd64, gcc-release-ninja)	1m 23s
linux (amd64, oldgcc-debug-make)	2m 6s
linux (amd64, clang-release-ninja)	1m 28s
linux (amd64, clang-release-ninja-static)	1m 59s
linux (amd64, oldclang-debug-make)	2m 0s
linux (arm64v8, gcc-debug-ninja)	4m 14s
linux (arm64v8, gcc-release-ninja)	7m 32s
linux (arm64v8, oldgcc-debug-make)	4m 27s
linux (arm64v8, clang-release-ninja)	2m 8s
linux (arm64v8, clang-release-ninja-static)	4m 35s
linux (arm64v8, oldclang-debug-make)	3m 56s
linux (amd64, clang-asan-ninja)	6m 25s
linux (amd64, clang-tsan-ninja)	2m 16s
linux (amd64, clang-ubsan-ninja)	1m 17s
linux (amd64, gcc-debug-noperfmon-ninja)	2m 52s
	1h 15m 4s

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