Before called by GetBufferForValue(), Value has already been called
function IsTypeInBuffer to make sure the value must be buffer type.
So GetBufferForValue can not return NULL.
This commit adds ASSERT to assume (GetBufferForValue (&Value) is not
NULL.

Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Hao A Wu <hao.a...@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zh...@intel.com>
---

v3: Add ASSERT instead of using error handling.

 MdeModulePkg/Universal/SetupBrowserDxe/Expression.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c 
b/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
index 7f4929c2fcd9..138912e00823 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
@@ -1281,7 +1281,10 @@ IfrToUint (
       Result->Type = EFI_IFR_TYPE_UNDEFINED;
       return EFI_SUCCESS;
     }
+
+    ASSERT ((GetBufferForValue (&Value) != NULL);
     Result->Value.u64 = *(UINT64*) GetBufferForValue (&Value);
+
     if (Value.Type == EFI_IFR_TYPE_BUFFER) {
       FreePool (Value.Buffer);
     }
-- 
2.18.0.windows.1


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