make exact matches return sooner in dmachine

src/switch_ivr_async.c

@@ -284,7 +284,8 @@ static dm_match_t switch_ivr_dmachine_check_match(switch_ivr_dmachine_t *dmachin
 				if (dmachine->cur_digit_len == dmachine->max_digit_len) break;
 			} 
 
-			if (!(both_bp && partial_bp) && !strncmp(dmachine->digits, bp->digits, strlen(dmachine->digits))) {
+			if (!(both_bp && partial_bp) && strlen(bp->digits) != strlen(dmachine->digits) && 
+				!strncmp(dmachine->digits, bp->digits, strlen(dmachine->digits))) {
 				if (exact_bp) {
 					best = DM_MATCH_BOTH;
 					both_bp = bp;