Fix invalid acquisition state in arduino output

Source/Processors/ArduinoOutput/ArduinoOutput.cpp

@@ -27,7 +27,7 @@
 #include <stdio.h>
 
 ArduinoOutput::ArduinoOutput()
-    : GenericProcessor("Arduino Output"), outputChannel(13), inputChannel(-1), state(true), deviceSelected(false)
+	: GenericProcessor("Arduino Output"), outputChannel(13), inputChannel(-1), state(true), deviceSelected(false), acquisitionIsActive(false)
 {
 
 }