#vulnerable code 
                             public void checkVersionSupport(byte[] keepassFile) throws IOException {
		BufferedInputStream bufferedInputStream = new BufferedInputStream(new ByteArrayInputStream(keepassFile));

		byte[] signature = new byte[VERSION_SIGNATURE_LENGTH];
		bufferedInputStream.read(signature);

		ByteBuffer signatureBuffer = ByteBuffer.wrap(signature);
		signatureBuffer.order(ByteOrder.LITTLE_ENDIAN);

		int signaturePart1 = ByteUtils.toUnsignedInt(signatureBuffer.getInt());
		int signaturePart2 = ByteUtils.toUnsignedInt(signatureBuffer.getInt());

		if (signaturePart1 == DATABASE_V2_FILE_SIGNATURE_1_INT && signaturePart2 == DATABASE_V2_FILE_SIGNATURE_2_INT) {
			return;
		} else if (signaturePart1 == OLD_DATABASE_V1_FILE_SIGNATURE_1_INT
				&& signaturePart2 == OLD_DATABASE_V1_FILE_SIGNATURE_2_INT) {
			throw new UnsupportedOperationException(
					"The provided KeePass database file seems to be from KeePass 1.x which is not supported!");
		} else {
			throw new UnsupportedOperationException("The provided file seems to be no KeePass database file!");
		}
	} 
                            #location 5 
                            #vulnerability type RESOURCE_LEAK
#fixed code
                             public void checkVersionSupport(byte[] keepassFile) throws IOException {
		BufferedInputStream inputStream = new BufferedInputStream(new ByteArrayInputStream(keepassFile));

		byte[] signature = new byte[VERSION_SIGNATURE_LENGTH];
		int readBytes = inputStream.read(signature);
		if(readBytes == -1) {
			throw new UnsupportedOperationException("Could not read KeePass header. The provided file seems to be no KeePass database file!");
		}

		ByteBuffer signatureBuffer = ByteBuffer.wrap(signature);
		signatureBuffer.order(ByteOrder.LITTLE_ENDIAN);

		int signaturePart1 = ByteUtils.toUnsignedInt(signatureBuffer.getInt());
		int signaturePart2 = ByteUtils.toUnsignedInt(signatureBuffer.getInt());

		if (signaturePart1 == DATABASE_V2_FILE_SIGNATURE_1_INT && signaturePart2 == DATABASE_V2_FILE_SIGNATURE_2_INT) {
			return;
		} else if (signaturePart1 == OLD_DATABASE_V1_FILE_SIGNATURE_1_INT
				&& signaturePart2 == OLD_DATABASE_V1_FILE_SIGNATURE_2_INT) {
			throw new UnsupportedOperationException(
					"The provided KeePass database file seems to be from KeePass 1.x which is not supported!");
		} else {
			throw new UnsupportedOperationException("The provided file seems to be no KeePass database file!");
		}
	}