Update XZ Utils to 5.0.3 (in deps)

src/xz/util.h

 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       util.h
 /// \brief      Miscellaneous utility functions
 //
 //  Author:     Lasse Collin
 //
 //  This file has been put into the public domain.
 //  You can do whatever you want with this file.
 //
 ///////////////////////////////////////////////////////////////////////////////
 
 /// \brief      Safe malloc() that never returns NULL
 ///
 /// \note       xmalloc(), xrealloc(), and xstrdup() must not be used when
 ///             there are files open for writing, that should be cleaned up
 ///             before exiting.
 #define xmalloc(size) xrealloc(NULL, size)
 
 
 /// \brief      Safe realloc() that never returns NULL
-extern void *xrealloc(void *ptr, size_t size);
+extern void *xrealloc(void *ptr, size_t size)
+                lzma_attribute((__malloc__)) lzma_attr_alloc_size(2);
 
 
 /// \brief      Safe strdup() that never returns NULL
-extern char *xstrdup(const char *src);
+extern char *xstrdup(const char *src) lzma_attribute((__malloc__));
 
 
 /// \brief      Fancy version of strtoull()
 ///
 /// \param      name    Name of the option to show in case of an error
 /// \param      value   String containing the number to be parsed; may
 ///                     contain suffixes "k", "M", "G", "Ki", "Mi", or "Gi"
 /// \param      min     Minimum valid value
 /// \param      max     Maximum valid value
 ///
@@ skipping 52 matching lines @@
 /// \return     Pointer to statically allocated buffer containing the string.
 ///
 /// \note       This uses double_to_str() internally so the static buffer
 ///             in double_to_str() will be overwritten.
 ///
 extern const char *uint64_to_nicestr(uint64_t value,
                 enum nicestr_unit unit_min, enum nicestr_unit unit_max,
                 bool always_also_bytes, uint32_t slot);
 
 
-/// \brief      Convert double to a string with one decimal place
-///
-/// This is like uint64_to_str() except that this converts a double and
-/// uses exactly one decimal place.
-extern const char *double_to_str(double value);
-
-
 /// \brief      Wrapper for snprintf() to help constructing a string in pieces
 ///
 /// A maximum of *left bytes is written starting from *pos. *pos and *left
 /// are updated accordingly.
 extern void my_snprintf(char **pos, size_t *left, const char *fmt, ...)
-                lzma_attribute((format(printf, 3, 4)));
+                lzma_attribute((__format__(__printf__, 3, 4)));
 
 
 /// \brief      Check if filename is empty and print an error message
 extern bool is_empty_filename(const char *filename);
 
 
 /// \brief      Test if stdin is a terminal
 ///
 /// If stdin is a terminal, an error message is printed and exit status set
 /// to EXIT_ERROR.
 extern bool is_tty_stdin(void);
 
 
 /// \brief      Test if stdout is a terminal
 ///
 /// If stdout is a terminal, an error message is printed and exit status set
 /// to EXIT_ERROR.
 extern bool is_tty_stdout(void);