convert linguistic/source/dlistimp.hxx from String to OUString

Change-Id: I6928f59bba5e744957f2b2aae34d2d057c147985

linguistic/source/dlistimp.cxx

@@ -302,7 +302,7 @@ DicList::~DicList()
 
 void DicList::SearchForDictionaries(
     DictionaryVec_t&rDicList,
-    const String &rDicDirURL,
+    const OUString &rDicDirURL,
     sal_Bool bIsWriteablePath )
 {
     osl::MutexGuard aGuard( GetLinguMutex() );

linguistic/source/dlistimp.hxx

@@ -88,7 +88,7 @@ class DicList :
     void            LaunchEvent(sal_Int16 nEvent, com::sun::star::uno::Sequence<
                             ::com::sun::star::linguistic2::XDictionary > xDic);
     void            SearchForDictionaries( DictionaryVec_t &rDicList,
-                                            const String &rDicDir, sal_Bool bIsWritePath );
+                                            const OUString &rDicDir, sal_Bool bIsWritePath );
     sal_Int32           GetDicPos(const com::sun::star::uno::Reference<
                             ::com::sun::star::linguistic2::XDictionary > &xDic);