USHRT_MAX -> SAL_MAX_UINT16

nCount apparently must fit into sal_uInt16 for the cast further down when
passing it into ScAppOptions::SetLRUFuncList sal_uInt16 nCount parameter.  (But
why the odd "nCount < SAL_MAX_UINT16" vs. "nCount <= SAL_MAX_UINT16" off-by-one?
Oh, my.)

Change-Id: I231f4af2ce2e6bf44db8db3fd9e965adfa17fecb
Reviewed-on: https://gerrit.libreoffice.org/48838Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

sc/source/core/tool/appoptio.cxx

@@ -131,7 +131,7 @@ static void lcl_SetLastFunctions( ScAppOptions& rOpt, const Any& rValue )
     if ( rValue >>= aSeq )
     {
         sal_Int32 nCount = aSeq.getLength();
-        if ( nCount < USHRT_MAX )
+        if ( nCount < SAL_MAX_UINT16 )
         {
             const sal_Int32* pArray = aSeq.getConstArray();
             std::unique_ptr<sal_uInt16[]> pUShorts(new sal_uInt16[nCount]);