tdf#112425: fix leak in MacSpellChecker

by using "autorelease" keyword with init vars

Change-Id: I056282460b94f8052287f5ad29d26a4870cd06a5
Reviewed-on: https://gerrit.libreoffice.org/42361Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

lingucomponent/source/spellcheck/macosxspell/macspellimp.mm

@@ -231,13 +231,12 @@ sal_Int16 MacSpellChecker::GetSpellFailure( const OUString &rWord, const Locale
     {
         aEnc = 0;
         NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
-        NSString* aNSStr = [[NSString alloc] initWithCharacters: reinterpret_cast<unichar const *>(nWord.getStr()) length: nWord.getLength()];
-        NSString* aLang = [[NSString alloc] initWithCharacters: reinterpret_cast<unichar const *>(rLocale.Language.getStr()) length: rLocale.Language.getLength()];
+        NSString* aNSStr = [[[NSString alloc] initWithCharacters: reinterpret_cast<unichar const *>(nWord.getStr()) length: nWord.getLength()]autorelease];
+        NSString* aLang = [[[NSString alloc] initWithCharacters: reinterpret_cast<unichar const *>(rLocale.Language.getStr()) length: rLocale.Language.getLength()]autorelease];
         if(rLocale.Country.getLength()>0)
         {
-            NSString* aCountry = [[NSString alloc] initWithCharacters: reinterpret_cast<unichar const *>(rLocale.Country.getStr()) length: rLocale.Country.getLength()];
+            NSString* aCountry = [[[NSString alloc] initWithCharacters: reinterpret_cast<unichar const *>(rLocale.Country.getStr()) length: rLocale.Country.getLength()]autorelease];
             NSString* aTaggedCountry = [@"_" stringByAppendingString:aCountry];
-            [aLang autorelease];
             aLang = [aLang  stringByAppendingString:aTaggedCountry];
         }