From 3b89543de69c623e76f3b00e263b1198bef0fb91 Mon Sep 17 00:00:00 2001
From: wenyekui <wyk4true@gmail.com>
Date: Fri, 1 Aug 2014 16:03:51 +0800
Subject: [PATCH] fix argument checking

---
 server/cmd_zset.go | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/server/cmd_zset.go b/server/cmd_zset.go
index d2facd3..01bca01 100644
--- a/server/cmd_zset.go
+++ b/server/cmd_zset.go
@@ -121,16 +121,17 @@ func zparseScoreRange(minBuf []byte, maxBuf []byte) (min int64, max int64, err e
 		min = math.MinInt64
 	} else {
 		var lopen bool = false
-		if minBuf[0] == '(' {
-			lopen = true
-			minBuf = minBuf[1:]
-		}
 
 		if len(minBuf) == 0 {
 			err = ErrCmdParams
 			return
 		}
 
+		if minBuf[0] == '(' {
+			lopen = true
+			minBuf = minBuf[1:]
+		}
+
 		min, err = ledis.StrInt64(minBuf, nil)
 		if err != nil {
 			return
@@ -150,15 +151,15 @@ func zparseScoreRange(minBuf []byte, maxBuf []byte) (min int64, max int64, err e
 		max = math.MaxInt64
 	} else {
 		var ropen = false
-		if maxBuf[0] == '(' {
-			ropen = true
-			maxBuf = maxBuf[1:]
-		}
 
 		if len(maxBuf) == 0 {
 			err = ErrCmdParams
 			return
 		}
+		if maxBuf[0] == '(' {
+			ropen = true
+			maxBuf = maxBuf[1:]
+		}
 
 		max, err = ledis.StrInt64(maxBuf, nil)
 		if err != nil {