Update XZ Utils to 5.0.3 (in deps)

src/liblzma/common/index_encoder.c

Index: src/liblzma/common/index_encoder.c
===================================================================
--- src/liblzma/common/index_encoder.c	(revision 50504)
+++ src/liblzma/common/index_encoder.c	(working copy)
@@ -42,12 +42,13 @@
 
 static lzma_ret
 index_encode(lzma_coder *coder,
-		lzma_allocator *allocator lzma_attribute((unused)),
-		const uint8_t *restrict in lzma_attribute((unused)),
-		size_t *restrict in_pos lzma_attribute((unused)),
-		size_t in_size lzma_attribute((unused)),
+		lzma_allocator *allocator lzma_attribute((__unused__)),
+		const uint8_t *restrict in lzma_attribute((__unused__)),
+		size_t *restrict in_pos lzma_attribute((__unused__)),
+		size_t in_size lzma_attribute((__unused__)),
 		uint8_t *restrict out, size_t *restrict out_pos,
-		size_t out_size, lzma_action action lzma_attribute((unused)))
+		size_t out_size,
+		lzma_action action lzma_attribute((__unused__)))
 {
 	// Position where to start calculating CRC32. The idea is that we
 	// need to call lzma_crc32() only once per call to index_encode().
@@ -209,6 +210,7 @@
 	lzma_next_strm_init(lzma_index_encoder_init, strm, i);
 
 	strm->internal->supported_actions[LZMA_RUN] = true;
+	strm->internal->supported_actions[LZMA_FINISH] = true;
 
 	return LZMA_OK;
 }