Fix the MS-Windows build due to introduction of B_.

 dired.c (directory_files_internal):
 fileio.c (Finsert_file_contents):
 insdel.c (prepare_to_modify_buffer):
 xdisp.c (pos_visible_p):
 s/ms-w32.h (MODE_LINE_BINARY_TEXT):
 w32fns.c (Fw32_shell_execute, Fx_show_tip, x_create_tip_frame):
 Use B_ for the MS-Windows build.

 From Tom Tromey:
 buffer.c (init_buffer_once, syms_of_buffer): Use B_ in DOS_NT case.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/fileio.c b/src/fileio.c
index afef7888b78..4a4935b43a2 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4110,9 +4110,9 @@ variable `last-coding-system-used' to the coding system actually used.  */)
   if ((VECTORP (CODING_ID_EOL_TYPE (coding.id))
        || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix))
       && ! CODING_REQUIRE_DECODING (&coding))
-    current_buffer->buffer_file_type = Qt;
+    B_ (current_buffer, buffer_file_type) = Qt;
   else
-    current_buffer->buffer_file_type = Qnil;
+    B_ (current_buffer, buffer_file_type) = Qnil;
 #endif
 
  handled: