Update XZ Utils to 5.0.4 (third_party)

src/xz/args.c

 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       args.c
 /// \brief      Argument parsing
 ///
 /// \note       Filter-specific options parsing is in options.c.
 //
 //  Author:     Lasse Collin
 //
 //  This file has been put into the public domain.
@@ skipping 420 matching lines @@
                 // unsigned char cast to int. Casting to int is done
                 // automatically due to integer promotion, but we need to
                 // force char to unsigned char manually. Otherwise 8-bit
                 // characters would get promoted to wrong value if
                 // char is signed.
                 if (isspace((unsigned char)env[i])) {
                         prev_was_space = true;
                 } else if (prev_was_space) {
                         prev_was_space = false;
 
-                        // Keep argc small enough to fit into a singed int
+                        // Keep argc small enough to fit into a signed int
                         // and to keep it usable for memory allocation.
                         if (++argc == my_min(
                                         INT_MAX, SIZE_MAX / sizeof(char *)))
                                 message_fatal(_("The environment variable "
                                                 "%s contains too many "
                                                 "arguments"), varname);
                 }
         }
 
         // Allocate memory to hold pointers to the arguments. Add one to get
@@ skipping 117 matching lines @@
                 args->arg_count = 1;
         } else {
                 // We got at least one filename from the command line, or
                 // --files or --files0 was specified.
                 args->arg_names = argv + optind;
                 args->arg_count = argc - optind;
         }
 
         return;
 }