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

Cc: Fu Siyuan <[email protected]>
Cc: Wu Jiaxin <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <[email protected]>
---
 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

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