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-rw-r--r--MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c b/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
index 83e669b9da..9751242fd2 100644
--- a/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
+++ b/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
@@ -444,10 +444,11 @@ CreateAltCfgString (
EFI_STRING TmpStr;
UINTN NewLen;
+ NewLen = StrLen (Result);
//
// String Len = ConfigResp + AltConfig + AltConfig + 1("\0")
//
- NewLen = (StrLen (Result) + ((1 + StrLen (ConfigHdr) + 8 + 4) + (8 + 4 + 7 + 4 + 7 + 4)) * 2 + 1) * sizeof (CHAR16);
+ NewLen = (NewLen + ((1 + StrLen (ConfigHdr) + 8 + 4) + (8 + 4 + 7 + 4 + 7 + 4)) * 2 + 1) * sizeof (CHAR16);
StringPtr = AllocateZeroPool (NewLen);
if (StringPtr == NULL) {
return NULL;