Enable -Wconversion: fold.c.

Refactor summary:
- foldinfo_T.fi_lnum: int --> linenr_T
                      Reorder field for optimal packing.
- foldAddMarker(..., markerlen): int --> size_t
    * foldstartmarkerlen: int --> size_t
        - foldDelMarker(..., markerlen): int --> size_t
            * foldendmarkerlen: int --> size_t

Helped-by: oni-link <knil.ino@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/nvim/edit.c b/src/nvim/edit.c
index 8b2ac1943f..ec0f136d8d 100644
--- a/src/nvim/edit.c
+++ b/src/nvim/edit.c
@@ -7354,9 +7354,9 @@ static int ins_bs(int c, int mode, int *inserted_space_p)
 
       *inserted_space_p = FALSE;
       if (p_sta && in_indent)
-        ts = (int)get_sw_value(curbuf);
+        ts = get_sw_value(curbuf);
       else
-        ts = (int)get_sts_value();
+        ts = get_sts_value();
       /* Compute the virtual column where we want to be.  Since
        * 'showbreak' may get in the way, need to get the last column of
        * the previous character. */
@@ -7826,9 +7826,9 @@ static int ins_tab(void)
   AppendToRedobuff((char_u *)"\t");
 
   if (p_sta && ind)             /* insert tab in indent, use 'shiftwidth' */
-    temp = (int)get_sw_value(curbuf);
+    temp = get_sw_value(curbuf);
   else if (curbuf->b_p_sts != 0)   /* use 'softtabstop' when set */
-    temp = (int)get_sts_value();
+    temp = get_sts_value();
   else                          /* otherwise use 'tabstop' */
     temp = (int)curbuf->b_p_ts;
   temp -= get_nolist_virtcol() % temp;