gcc 4.3.2 examines getLowerUpperIndex() and concludes that it's not

guaranteed to initialize its two last arguments.  Therefore, there is a
warning in the subsequent caller ar5416FillVpdTable(), which doesn't
initialize those arguments.

Change getLowerUpperIndex() to assign values to indexL and indexR even
in the case of assertion failure.

Submitted by:	Pavel Roskin <proski@gnu.org>

sys/dev/ath/ath_hal/ar5416/ar5416_reset.c

@@ -2710,6 +2710,7 @@ getLowerUpperIndex(uint8_t target, uint8_t *pList, uint16_t listSize,
         }
     }
     HALASSERT(0);
+    *indexL = *indexR = 0;
     return AH_FALSE;
 }