Close individual files' readers in EnigmaDirReader

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Adjusted format detection to only return ENIGMA_DIR for non-empty directories with at least one `.mapping` file
 - Fixed writer NPEs when metadata or member source descriptors are null
 - Fixed SRG writer omitting fields with missing source descriptors
+- Fixed Enigma directory reader never closing the individual files' readers
 
 ## [0.7.1] - 2025-01-07
 - Restored the ability to read source-namespace-only mapping files, even if not spec-compliant

src/main/java/net/fabricmc/mappingio/format/enigma/EnigmaDirReader.java

@@ -16,6 +16,7 @@
 
 package net.fabricmc.mappingio.format.enigma;
 
+import java.io.BufferedReader;
 import java.io.IOException;
 import java.nio.file.FileVisitResult;
 import java.nio.file.Files;
@@ -92,7 +93,9 @@ public boolean visitEnd() throws IOException {
 			@Override
 			public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
 				if (file.getFileName().toString().endsWith("." + MappingFormat.ENIGMA_FILE.fileExt)) {
-					EnigmaFileReader.read(Files.newBufferedReader(file), sourceNs, targetNs, delegatingVisitor);
+					try (BufferedReader reader = Files.newBufferedReader(file)) {
+						EnigmaFileReader.read(reader, sourceNs, targetNs, delegatingVisitor);
+					}
 				}
 
 				return FileVisitResult.CONTINUE;