keyboard-fw: don't disable WDT during its interrupt handler

reform2-keyboard-fw/keyboard.c

@@ -342,7 +342,7 @@ void setup_hardware(void)
 ISR(WDT_vect)
 {
   // WDT interrupt enable and flag cleared on entry
-  wdt_disable(); // Disable watchdog for now
+  Delay_MS(1);
 }
 
 /** Event handler for the library USB Connection event. */

reform2-keyboard-fw/powersave.c

@@ -60,6 +60,7 @@ void keyboard_power_off(void)
     sleep_cpu();        // Actually go to sleep
     // Zzzzzz
     sleep_disable();    // We've woken up
+    wdt_disable();      // Disable watchdog for now
     sei();
     // Check if circle key has been pressed (active-low)
     // If not reset the watchdog and try again