[PATCH v2] ShellPkg/UefiShellLevel2CommandsLib: Support unspecified local Timezone.

["Marvin Häuser" <Marvin.Haeuser@outlook.com>]

EFI_RUNTIME_SERVICES.GetTime() might return an unspecified Timezone,
such as when SetTime() has not been called after the PC-AT CMOS RTC
was cut off power. Consider this case by not attempting Timezone
translations for when it is invalid.

V2:
  - Do not change the copyright date as requested.
  - Added R-bs from V1 as no functional changes have been made.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marvin Haeuser <Marvin.Haeuser@outlook.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
---
 ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c b/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c
index 7d2e15f5206b..e502685a1dbb 100644
--- a/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c
+++ b/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c
@@ -506,7 +506,7 @@ PrintLsOutput(
       // Change the file time to local time.
       //
       Status = gRT->GetTime(&LocalTime, NULL);
-      if (!EFI_ERROR (Status)) {
+      if (!EFI_ERROR (Status) && (LocalTime.TimeZone != EFI_UNSPECIFIED_TIMEZONE)) {
         if ((Node->Info->CreateTime.TimeZone != EFI_UNSPECIFIED_TIMEZONE) &&
             (Node->Info->CreateTime.Month >= 1 && Node->Info->CreateTime.Month <= 12)) {
           //
-- 
2.17.0.windows.1