Fix decoding DOS EOL in a unibyte buffer

* src/coding.c (decode_eol): Loop over bytes, not characters.
(Bug#5251)

1 files changed, 3 insertions, 3 deletions

diff --git a/src/coding.c b/src/coding.c
index 3bee16c4f0c..e591bedc3e5 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -6828,11 +6828,11 @@ decode_eol (struct coding_system *coding)
         }
       else
         {
-          ptrdiff_t pos_byte = coding->dst_pos_byte;
           ptrdiff_t pos = coding->dst_pos;
-          ptrdiff_t pos_end = pos + coding->produced_char - 1;
+          ptrdiff_t pos_byte = coding->dst_pos_byte;
+          ptrdiff_t pos_end = pos_byte + coding->produced - 1;
 
-          while (pos < pos_end)
+          while (pos_byte < pos_end)
             {
               p = BYTE_POS_ADDR (pos_byte);
               if (*p == '\r' && p[1] == '\n')