scratch/long-lines-cleanup 974e4f33333 4/4: Make get_medium_narrowing_begv/zv static

[Gregory Heytings]

branch: scratch/long-lines-cleanup
commit 974e4f3333311b557754e2fdbaa75b0c1077fc61
Author: Gregory Heytings <gregory@heytings.org>
Commit: Gregory Heytings <gregory@heytings.org>

    Make get_medium_narrowing_begv/zv static
    
    * src/xdisp.c (get_medium_narrowing_begv):
    (get_medium_narrowing_zv): Make these two functions static, they
    are only used in xdisp.c.
    
    * src/dispextern.h: Remove the prototypes.
---
 src/dispextern.h | 2 --
 src/xdisp.c      | 4 ++--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/dispextern.h b/src/dispextern.h
index 957e09f9ecc..ece128949f5 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -3409,8 +3409,6 @@ void mark_window_display_accurate (Lisp_Object, bool);
 void redisplay_preserve_echo_area (int);
 void init_iterator (struct it *, struct window *, ptrdiff_t,
                     ptrdiff_t, struct glyph_row *, enum face_id);
-ptrdiff_t get_medium_narrowing_begv (struct window *, ptrdiff_t);
-ptrdiff_t get_medium_narrowing_zv (struct window *, ptrdiff_t);
 ptrdiff_t get_small_narrowing_begv (struct window *, ptrdiff_t);
 ptrdiff_t get_large_narrowing_begv (ptrdiff_t);
 ptrdiff_t get_large_narrowing_zv (ptrdiff_t);
diff --git a/src/xdisp.c b/src/xdisp.c
index 454cbbbf6d5..a4d02529563 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -3594,14 +3594,14 @@ get_narrowed_len (struct window *w)
   return get_narrowed_width (w) * max (1, height);
 }
 
-ptrdiff_t
+static ptrdiff_t
 get_medium_narrowing_begv (struct window *w, ptrdiff_t pos)
 {
   int len = get_narrowed_len (w);
   return max ((pos / len - 1) * len, BEGV);
 }
 
-ptrdiff_t
+static ptrdiff_t
 get_medium_narrowing_zv (struct window *w, ptrdiff_t pos)
 {
   int len = get_narrowed_len (w);