loplugin:redundantcast: redundant static_casts in xmloff

Change-Id: I0893b51a3c7e48451dd93bcda77e9005d6eb799c

xmloff/source/text/txtstyli.cxx

@@ -387,7 +387,7 @@ void XMLTextStyleContext::FillPropertySet(
     // catch the combined characters attribute
 
     // imitate XMLPropStyleContext::FillPropertySet(...)
-    SvXMLStylesContext* pSvXMLStylesContext = static_cast< SvXMLStylesContext* >(GetStyles());
+    SvXMLStylesContext* pSvXMLStylesContext = GetStyles();
     rtl::Reference < SvXMLImportPropertyMapper > xImpPrMap = pSvXMLStylesContext->GetImportPropertyMapper(GetFamily());
     DBG_ASSERT(xImpPrMap.is(),"Where is the import prop mapper?");