[PATCH] ShellPkg/comp: return NOT_EQUAL when compared files are different

[Ruiyu Ni <ruiyu.ni@intel.com>]

Today's implementation returns 0 even when compared files are
different.
The patch returns 27 (SHELL_NOT_QUAL) in such case to follow
the shell spec.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
---
 ShellPkg/Library/UefiShellDebug1CommandsLib/Comp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Comp.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Comp.c
index f45f663dbb..7c232d01c7 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Comp.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Comp.c
@@ -2,7 +2,7 @@
   Main file for Comp shell Debug1 function.
 
   (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
-  Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -356,6 +356,7 @@ ShellCommandRunComp (
         if (DiffPointNumber == 0) {
           ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_COMP_FOOTER_PASS), gShellDebug1HiiHandle);
         } else {
+          ShellStatus = SHELL_NOT_EQUAL;
           ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_COMP_FOOTER_FAIL), gShellDebug1HiiHandle);
         }
       }
-- 
2.16.1.windows.1