Update XZ Utils to 5.0.3 (in deps)

src/liblzma/api/lzma/stream_flags.h

Index: src/liblzma/api/lzma/stream_flags.h
===================================================================
--- src/liblzma/api/lzma/stream_flags.h	(revision 50504)
+++ src/liblzma/api/lzma/stream_flags.h	(working copy)
@@ -91,8 +91,6 @@
 	lzma_reserved_enum reserved_enum2;
 	lzma_reserved_enum reserved_enum3;
 	lzma_reserved_enum reserved_enum4;
-	lzma_reserved_enum reserved_enum5;
-	lzma_reserved_enum reserved_enum6;
 	lzma_bool reserved_bool1;
 	lzma_bool reserved_bool2;
 	lzma_bool reserved_bool3;
@@ -103,8 +101,6 @@
 	lzma_bool reserved_bool8;
 	uint32_t reserved_int1;
 	uint32_t reserved_int2;
-	uint32_t reserved_int3;
-	uint32_t reserved_int4;
 
 } lzma_stream_flags;
 
@@ -148,7 +144,7 @@
 /**
  * \brief       Decode Stream Header
  *
- * \param       options     Stream Header options to be encoded.
+ * \param       options     Target for the decoded Stream Header options.
  * \param       in          Beginning of the input buffer of
  *                          LZMA_STREAM_HEADER_SIZE bytes.
  *
@@ -183,7 +179,7 @@
 /**
  * \brief       Decode Stream Footer
  *
- * \param       options     Stream Header options to be encoded.
+ * \param       options     Target for the decoded Stream Header options.
  * \param       in          Beginning of the input buffer of
  *                          LZMA_STREAM_HEADER_SIZE bytes.
  *