Do not cast dval.

Make global _usage_page unsigned.

Reviewed by:	imp (mentor)

lib/libusbhid/parse.c

@@ -213,12 +213,11 @@ hid_get_item_raw(hid_data_t s, hid_item_t *h)
 			dval = 0;
 			break;
 		case 1:
-			dval = (int8_t)*data++;
+			dval = *data++;
 			break;
 		case 2:
 			dval = *data++;
 			dval |= *data++ << 8;
-			dval = (int16_t)dval;
 			break;
 		case 4:
 			dval = *data++;

lib/libusbhid/usbhid.h

@@ -45,7 +45,7 @@ typedef enum hid_kind {
 
 typedef struct hid_item {
 	/* Global */
-	int _usage_page;
+	unsigned int _usage_page;
 	int logical_minimum;
 	int logical_maximum;
 	int physical_minimum;