Should pass in bytes of string buffer to UnicodeSPrint() rather than Unicode string length.

Signed-off-by: Tian Feng <feng.tian@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13691 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/SetupBrowserDxe/Expression.c

@@ -1071,7 +1071,7 @@ IfrToString (
       CopyMem (TmpBuf, Value.Buffer, Value.BufferLen * sizeof (CHAR16));
       PrintFormat = L"%s";  
     }
-    UnicodeSPrint (Buffer, MAXIMUM_VALUE_CHARACTERS, PrintFormat, Value.Buffer);  
+    UnicodeSPrint (Buffer, sizeof (Buffer), PrintFormat, Value.Buffer);  
     String = Buffer; 
     FreePool (TmpBuf);
     FreePool (Value.Buffer);