Re: [PATCH] NetworkPkg/IScsiDxe: Remove redundant call to StrLen

["Fu, Siyuan" <siyuan.fu@intel.com>]

Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>

-----Original Message-----
From: Wu, Hao A 
Sent: Tuesday, September 19, 2017 10:12 AM
To: edk2-devel@lists.01.org
Cc: Wu, Hao A <hao.a.wu@intel.com>; Fu, Siyuan <siyuan.fu@intel.com>; Wu, Jiaxin <jiaxin.wu@intel.com>
Subject: [PATCH] NetworkPkg/IScsiDxe: Remove redundant call to StrLen

The commits ultilizes a local variable to store the length of a string
which will be used right after.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Wu Jiaxin <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
---
 NetworkPkg/IScsiDxe/IScsiConfig.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/NetworkPkg/IScsiDxe/IScsiConfig.c b/NetworkPkg/IScsiDxe/IScsiConfig.c
index c0dd305ecf..52e51d6b31 100644
--- a/NetworkPkg/IScsiDxe/IScsiConfig.c
+++ b/NetworkPkg/IScsiDxe/IScsiConfig.c
@@ -766,8 +766,10 @@ IScsiConvertAttemptConfigDataToIfrNvDataByKeyword (
 
       *(IfrNvData->ISCSIMacAddr + StrLen (IfrNvData->ISCSIMacAddr)) = L'/';
     }
-    if (StrLen (IfrNvData->ISCSIMacAddr) != 0) {
-      *(IfrNvData->ISCSIMacAddr + StrLen (IfrNvData->ISCSIMacAddr) - 1) = L'\0';
+
+    StringLen = StrLen (IfrNvData->ISCSIMacAddr);
+    if (StringLen > 0) {
+      *(IfrNvData->ISCSIMacAddr + StringLen - 1) = L'\0';
     }
   }
 }
-- 
2.12.0.windows.1