HwndWrapperTests: fix testSendMessage and testSendMessageTimeout
HwndWrapperTests: fix testSendMessage and testSendMessageTimeout

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