Enhance HiiGetBrowserData API to support the case that storage element is 0.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8135 6f19259b-4bc3-4df7-8a09-765794883524
2009-04-20 08:12:38 +00:00
parent 2fd618df9d
commit 6412128af3
2 changed files with 11 additions and 2 deletions
--- a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
+++ b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
@@ -564,6 +564,15 @@ InternalHiiBrowserCallback (
                              VariableGuid,
                              VariableName
                              );
+    
+    if (!EFI_ERROR (Status)) {
+      //
+      // No Resluts Data, only allocate one char for '\0'
+      //
+      ResultsData = AllocateZeroPool (sizeof (CHAR16));
+      return ResultsData;
+    }
+
    if (Status != EFI_BUFFER_TOO_SMALL) {
      return NULL;
    }