Stability fix for testWaitCPUUsageLower.
Stability fix for testWaitCPUUsageLower.

moden-py/pywinauto,drinkertea/pywinauto,vasily-v-ryabov/pywinauto,pywinauto/pywinauto,cetygamer/pywinauto,airelil/pywinauto,moden-py/pywinauto,MagazinnikIvan/pywinauto