restore SvxNumRule::SetLevel variant

correctly removed as unused by 1dc61297 but we
will need it again

Change-Id: I2d5c391506a84abe435547232398aa43a3468fe6

editeng/inc/editeng/numitem.hxx

@@ -267,6 +267,7 @@ public:
     const SvxNumberFormat*  Get(sal_uInt16 nLevel)const;
     const SvxNumberFormat&  GetLevel(sal_uInt16 nLevel)const;
     void                    SetLevel(sal_uInt16 nLevel, const SvxNumberFormat& rFmt, sal_Bool bIsValid = sal_True);
+    void                    SetLevel(sal_uInt16 nLevel, const SvxNumberFormat* pFmt);
 
     sal_Bool                    IsContinuousNumbering()const
                                             {return bContinuousNumbering;}

editeng/source/items/numitem.cxx

@@ -836,6 +836,23 @@ void SvxNumRule::SetLevel( sal_uInt16 i, const SvxNumberFormat& rNumFmt, sal_Boo
     }
 }
 
+void SvxNumRule::SetLevel(sal_uInt16 nLevel, const SvxNumberFormat* pFmt)
+{
+    DBG_ASSERT(nLevel < SVX_MAX_NUM, "Wrong Level" );
+
+    if( nLevel < SVX_MAX_NUM )
+    {
+        aFmtsSet[nLevel] = 0 != pFmt;
+        if(pFmt)
+            SetLevel(nLevel, *pFmt);
+        else
+        {
+            delete aFmts[nLevel];
+            aFmts[nLevel] = 0;
+        }
+    }
+}
+
 String  SvxNumRule::MakeNumString( const SvxNodeNum& rNum, sal_Bool bInclStrings ) const
 {
     String aStr;