fix off-by-one bug on pot changer.

Author: midilab

v2/AciduinoV2/1_uctrl.ino

@@ -337,7 +337,7 @@ void uCtrlSetup() {
   uCtrl.page->setNavComponentCtrl(SHIFT_BUTTON, UP_BUTTON, DOWN_BUTTON, PREVIOUS_BUTTON, NEXT_BUTTON, PAGE_BUTTON_1, PAGE_BUTTON_2, GENERIC_BUTTON_1, GENERIC_BUTTON_2, ENCODER_DEC, ENCODER_INC);
 #elif defined(USE_CHANGER_POT)
   uCtrl.page->setNavComponentCtrl(SHIFT_BUTTON, UP_BUTTON, DOWN_BUTTON, PREVIOUS_BUTTON, NEXT_BUTTON, PAGE_BUTTON_1, PAGE_BUTTON_2, GENERIC_BUTTON_1, GENERIC_BUTTON_2);
-  uCtrl.page->setNavPot(1);
+  uCtrl.page->setNavPot(0);
 #endif
   // hook button callback setup
   // previous track