Update XZ Utils to 5.0.3 (in deps)

src/liblzma/lzma/lzma2_encoder.c

 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       lzma2_encoder.c
 /// \brief      LZMA2 encoder
 ///
 //  Authors:    Igor Pavlov
 //              Lasse Collin
 //
 //  This file has been put into the public domain.
 //  You can do whatever you want with this file.
@@ skipping 356 matching lines @@
         return sizeof(lzma_coder) + lzma_mem;
 }
 
 
 extern lzma_ret
 lzma_lzma2_props_encode(const void *options, uint8_t *out)
 {
         const lzma_options_lzma *const opt = options;
         uint32_t d = my_max(opt->dict_size, LZMA_DICT_SIZE_MIN);
 
-        // Round up to to the next 2^n - 1 or 2^n + 2^(n - 1) - 1 depending
+        // Round up to the next 2^n - 1 or 2^n + 2^(n - 1) - 1 depending
         // on which one is the next:
         --d;
         d |= d >> 2;
         d |= d >> 3;
         d |= d >> 4;
         d |= d >> 8;
         d |= d >> 16;
 
         // Get the highest two bits using the proper encoding:
         if (d == UINT32_MAX)
                 out[0] = 40;
         else
                 out[0] = get_pos_slot(d + 1) - 24;
 
         return LZMA_OK;
 }