Revert version of libkiwix and libzim

- libzim: 6.3.2
- libkiwix: 9.4.1

Model/Operations/SearchOperation/SearchOperation.mm

@@ -65,7 +65,7 @@ - (NSArray *)getFullTextSearchResults:(struct SharedReaders)sharedReaders withFu
     // retrieve full text search results
     kiwix::Result *result = searcher.getNextResult();
     while (result != NULL) {
-        NSString *zimFileID = [NSString stringWithCString:result->get_zimId().c_str() encoding:NSUTF8StringEncoding];
+        NSString *zimFileID = sharedReaders.readerIDs[result->get_readerIndex()];
         NSString *path = [NSString stringWithCString:result->get_url().c_str() encoding:NSUTF8StringEncoding];
         NSString *title = [NSString stringWithCString:result->get_title().c_str() encoding:NSUTF8StringEncoding];
 
@@ -98,9 +98,8 @@ - (NSArray *)getTitleSearchResults:(std::vector<std::shared_ptr<kiwix::Reader>>)
         NSString *zimFileID = [NSString stringWithCString:reader->getId().c_str() encoding:NSUTF8StringEncoding];
         for (auto &suggestion : *suggestions) {
             try {
-                NSString *title = [NSString stringWithCString:suggestion.getTitle().c_str() encoding:NSUTF8StringEncoding];
-                NSString *path = [NSString stringWithCString:suggestion.getPath().c_str() encoding:NSUTF8StringEncoding];
-
+                NSString *title = [NSString stringWithCString:suggestion.at(0).c_str() encoding:NSUTF8StringEncoding];
+                NSString *path = [NSString stringWithCString:suggestion.at(1).c_str() encoding:NSUTF8StringEncoding];
                 SearchResult *searchResult = [[SearchResult alloc] initWithZimFileID:zimFileID path:path title:title];
                 if (searchResult != nil) { [results addObject:searchResult]; }
                 if (self.isCancelled) { break; }