MdeMoudlePkg/CapsulePei: No need to remain space for null-terminate

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1853

UnicodeValueToStringS would remain two bytes for the first
parameter to set the null- terminate. So remove this change
in Mu.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Michael Turner <Michael.Turner@microsoft.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Zhichao gao <zhichao.gao@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>

diff --git a/MdeModulePkg/Universal/CapsulePei/UefiCapsule.c b/MdeModulePkg/Universal/CapsulePei/UefiCapsule.c
index 3ac95b7be67c994c1812dec4aa1f11a2a41ceb2e..8d4ae69bb2e9f14c0257577c2518d855bf4c8aea 100644 (file)
--- a/MdeModulePkg/Universal/CapsulePei/UefiCapsule.c
+++ b/MdeModulePkg/Universal/CapsulePei/UefiCapsule.c
@@ -922,7 +922,7 @@ GetScatterGatherHeadEntries (
     if (Index != 0) {\r
       UnicodeValueToStringS (\r
         TempVarName,\r
     if (Index != 0) {\r
       UnicodeValueToStringS (\r
         TempVarName,\r

-        (sizeof (CapsuleVarName) - ((StrLen (CapsuleVarName) + 1) * sizeof (CHAR16))),\r
+        (sizeof (CapsuleVarName) - ((UINTN)TempVarName - (UINTN)CapsuleVarName)),\r

         0,\r
         Index,\r
         0\r
         0,\r
         Index,\r
         0\r