Fix: Unable to resolve relative symlinks for pool statistics

cdstar-backend-nio/src/main/java/de/gwdg/cdstar/pool/nio/NioPool.java

@@ -366,10 +366,7 @@ public class NioPool implements StoragePool {
 			cacheStats = indexCache.stats();
 			cacheSize = indexCache.estimatedSize();
 			try {
-				Path target = basePath;
-				while (Files.isSymbolicLink(target))
-					target = Files.readSymbolicLink(target);
-				final FileStore fileStore = Files.getFileStore(target);
+				final FileStore fileStore = Files.getFileStore(basePath.toRealPath());
 				fsFree = fileStore.getUsableSpace();
 				fsTotal = fileStore.getTotalSpace();
 			} catch (final IOException e) {