convert LINGUCOMPONENT module from String to OUString

Change-Id: I1a47545127885f92e9fcdbf855ca60fbbef1395d

lingucomponent/source/lingutil/lingutil.cxx

@@ -83,7 +83,7 @@ std::vector< SvtLinguConfigDictionaryEntry > GetOldStyleDics( const char *pDicTy
         return aRes;
 
     OUString aFormatName;
-    String aDicExtension;
+    OUString aDicExtension;
 #ifdef SYSTEM_DICTS
     OUString aSystemDir;
     OUString aSystemPrefix;
@@ -120,7 +120,7 @@ std::vector< SvtLinguConfigDictionaryEntry > GetOldStyleDics( const char *pDicTy
     }
 
 
-    if (aFormatName.isEmpty() || aDicExtension.Len() == 0)
+    if (aFormatName.isEmpty() || aDicExtension.isEmpty())
         return aRes;
 
 #ifdef SYSTEM_DICTS

lingucomponent/source/spellcheck/spell/sspellimp.cxx

@@ -483,7 +483,7 @@ Reference< XSpellAlternatives >
         }
 
         // now return an empty alternative for no suggestions or the list of alternatives if some found
-        String aTmp(rWord);
+        OUString aTmp(rWord);
         xRes = SpellAlternatives::CreateSpellAlternatives( aTmp, nLang, SpellFailure::SPELLING_ERROR, aStr );
         return xRes;
     }