Linux

double buffer fix for newer version of c++ #126

Job	Run time
clone-linux	6s
build-oscilloscope-linux / build-oscilloscope-linux	57s
build-dataparser-linux / build-dataparser-linux	39s
test-dataparser-linux / test-dataparser-linux	9s
test-oscilloscope-linux / test-oscilloscope-linux	18s
	2m 9s

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