patch 8.2.4928: various white space and cosmetic mistakes

Problem:    Various white space and cosmetic mistakes.
Solution:   Change spaces to tabs, improve comments.
diff --git a/src/move.c b/src/move.c
index 5e31e71..58bd97f 100644
--- a/src/move.c
+++ b/src/move.c
@@ -185,7 +185,7 @@
 #endif
     int		check_topline = FALSE;
     int		check_botline = FALSE;
-    long        *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so;
+    long	*so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so;
     int		save_so = *so_ptr;
 
     // If there is no valid screen and when the window height is zero just use
@@ -435,7 +435,7 @@
 {
     lineoff_T	loff;
     int		n;
-    long        so = get_scrolloff_value();
+    long	so = get_scrolloff_value();
 
     if (curwin->w_cursor.lnum < curwin->w_topline + so
 #ifdef FEAT_FOLDING
@@ -951,8 +951,8 @@
     colnr_T	startcol;
     colnr_T	endcol;
     colnr_T	prev_skipcol;
-    long        so = get_scrolloff_value();
-    long        siso = get_sidescrolloff_value();
+    long	so = get_scrolloff_value();
+    long	siso = get_sidescrolloff_value();
 
     /*
      * First make sure that w_topline is valid (after moving the cursor).
@@ -1976,7 +1976,7 @@
     linenr_T	old_valid = curwin->w_valid;
     int		old_empty_rows = curwin->w_empty_rows;
     linenr_T	cln;		    // Cursor Line Number
-    long        so = get_scrolloff_value();
+    long	so = get_scrolloff_value();
 
     cln = curwin->w_cursor.lnum;
     if (set_topbot)
@@ -2270,7 +2270,7 @@
     int		above_wanted, below_wanted;
     linenr_T	cln;		    // Cursor Line Number
     int		max_off;
-    long        so = get_scrolloff_value();
+    long	so = get_scrolloff_value();
 
     /*
      * How many lines we would like to have above/below the cursor depends on
@@ -2390,7 +2390,7 @@
     int		retval = OK;
     lineoff_T	loff;
     linenr_T	old_topline = curwin->w_topline;
-    long        so = get_scrolloff_value();
+    long	so = get_scrolloff_value();
 
     if (curbuf->b_ml.ml_line_count == 1)    // nothing to do
     {