[PATCH] ShellPkg/DmpStore: fix GCC/CLANG build failure

[Laszlo Ersek <lersek@redhat.com>]

> ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c:525:66: error:
> passing argument 2 of 'gEfiShellProtocol->GetGuidName' from incompatible
> pointer type [-Werror=incompatible-pointer-types]
>
>       Status = gEfiShellProtocol->GetGuidName(&FoundVarGuid, &GuidName);
>                                                              ^
> ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c:525:66: note:
> expected 'const CHAR16 ** {aka const short unsigned int **}' but
> argument is of type 'CHAR16 ** {aka short unsigned int **}'

Pointer-to-(pointer-to-CHAR16) and pointer-to-(pointer-to-const-CHAR16)
are incompatible types; GCC and CLANG are right to complain.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Steven Shi <steven.shi@intel.com>
Reported-by: Jenkins Build Host <jenkins@kraxel.org>
Reported-by: Steven Shi <steven.shi@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=716
Fixes: 09e8678380aaaf0a5ef59179ff59e0a045d1b0bf
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---

Notes:
    I'm going to push this as soon as I get an R-b from anyone.
    
    Thanks
    Laszlo

 ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c
index 062ab5dc3a9a..5791da9acc8c 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c
@@ -424,7 +424,7 @@ CascadeProcessVariables (
   CHAR16                    *AttrString;
   CHAR16                    *HexString;
   EFI_STATUS                SetStatus;
-  CHAR16                    *GuidName;
+  CONST CHAR16              *GuidName;
 
   if (ShellGetExecutionBreakFlag()) {
     return (SHELL_ABORTED);
-- 
2.14.1.3.gb7cf6e02401b