Update XZ Utils to 5.0.5

src/xzdec/xzdec.c

 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       xzdec.c
 /// \brief      Simple single-threaded tool to uncompress .xz or .lzma files
 //
 //  Author:     Lasse Collin
 //
 //  This file has been put into the public domain.
 //  You can do whatever you want with this file.
 //
@@ skipping 44 matching lines @@
         va_end(ap);
         return;
 }
 
 
 static void lzma_attribute((__noreturn__))
 help(void)
 {
         printf(
 "Usage: %s [OPTION]... [FILE]...\n"
-"Uncompress files in the ." TOOL_FORMAT " format to the standard output.\n"
+"Decompress files in the ." TOOL_FORMAT " format to standard output.\n"
 "\n"
-"  -c, --stdout       (ignored)\n"
-"  -d, --decompress   (ignored)\n"
-"  -k, --keep         (ignored)\n"
+"  -d, --decompress   (ignored, only decompression is supported)\n"
+"  -k, --keep         (ignored, files are never deleted)\n"
+"  -c, --stdout       (ignored, output is always written to standard output)\n"
 "  -q, --quiet        specify *twice* to suppress errors\n"
-"  -Q, --no-warn      (ignored)\n"
+"  -Q, --no-warn      (ignored, the exit status 2 is never used)\n"
 "  -h, --help         display this help and exit\n"
 "  -V, --version      display the version number and exit\n"
 "\n"
 "With no FILE, or when FILE is -, read standard input.\n"
 "\n"
 "Report bugs to <" PACKAGE_BUGREPORT "> (in English or Finnish).\n"
 PACKAGE_NAME " home page: <" PACKAGE_URL ">\n", progname);
 
         tuklib_exit(EXIT_SUCCESS, EXIT_FAILURE, display_errors);
 }
@@ skipping 232 matching lines @@
         }
 
 #ifndef NDEBUG
         // Free the memory only when debugging. Freeing wastes some time,
         // but allows detecting possible memory leaks with Valgrind.
         lzma_end(&strm);
 #endif
 
         tuklib_exit(EXIT_SUCCESS, EXIT_FAILURE, display_errors);
 }