MdeModulePkg/HiiDatabaseDxe: Remove buffer error for string default.

Remove efivarstore IFR buffer error when string load default.
In the case of varstore type IFR, it will be NULL,
just break into next opcode process.

Resolve issue from commit cbe8a09
varstore type IFR string might return status error
while execute ExtractConfig function.

Signed-off-by: Longhao Lee <longhaox.lee@intel.com>

Author: poloaegis83

MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c

@@ -3016,6 +3016,10 @@ ParseIfrData (
           goto Done;
         }
 
+        if (IfrEfiVarStoreTmp == NULL) {
+          break;
+        }
+
         //
         // Set default value base on the DefaultId list get from IFR data.
         //
@@ -3030,11 +3034,6 @@ ParseIfrData (
               goto Done;
             }
 
-            if (IfrEfiVarStoreTmp == NULL) {
-              Status = EFI_OUT_OF_RESOURCES;
-              goto Done;
-            }
-
             FindQuestionDefaultSetting (DefaultData.DefaultId, IfrEfiVarStoreTmp, &(IfrString->Question), (VOID *)StringData, VarWidth, QuestionReferBitField);
             if ((DefaultData.Value.string != 0) && (StringData != NULL)) {
               DefaultData.Value.string = InternalHiiSetString (HiiHandle, 0, StringData, NULL);