Incorporated the Mac HID SET_IDLE behaviour fix. Minor typos.

Included the Mac fix from TMK main branch.

m0110_usb/matrix.c

@@ -124,9 +124,9 @@ uint8_t matrix_scan(void)
        // We know that the received key is either keypad, arrow or calc; moreover, we assume that any
        // simultaneous events will deal with shift plus arrow key simultaneous releases. It is not possible
        // to distinguish a simultaneous shift plus arrow key press from a 'virtual' shift plus arrow key
-       // press event, generated by by the 'calc' keys.
+       // press event, generated by the 'calc' keys.
 
-       // If the received key release is a 'calc' key and not already register as pressed, but the arrow key
+       // If the received key release is a 'calc' key and not already registered as pressed, but the arrow key
        // with the same scancode is registered as pressed, then we understand that we've got a simultaneous
        // shift-arrow release; then readjust the received key code to 'arrow' (0x40) instead of 'calc' (0x60)
        // (i.e. subtract 0x20)

pjrc/usb.c

@@ -626,7 +626,7 @@ void usb_remote_wakeup(void)
 //
 ISR(USB_GEN_vect)
 {
-	uint8_t intbits, t, i;
+	uint8_t intbits, t;
 	static uint8_t div4=0;
 
         intbits = UDINT;
@@ -667,13 +667,17 @@ ISR(USB_GEN_vect)
 				usb_keyboard_idle_count++;
 				if (usb_keyboard_idle_count == usb_keyboard_idle_config) {
 					usb_keyboard_idle_count = 0;
+/*
 					UEDATX = keyboard_report_prev->mods;
 					UEDATX = 0;
-                                        uint8_t keys = usb_keyboard_protocol ? KBD_REPORT_KEYS : 6;
-					for (i=0; i<keys; i++) {
+
+					uint8_t keys = usb_keyboard_protocol ? KBD_REPORT_KEYS : 6;
+
+					for (uint8_t i=0; i<keys; i++) {
 						UEDATX = keyboard_report_prev->keys[i];
 					}
 					UEINTX = 0x3A;
+*/
 				}
 			}
 		}