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/indent.c b/src/indent.c
index 0666f0e..06d98f9 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -161,7 +161,7 @@
     int		tabcount;
     colnr_T	tabcol = 0;
     int		t;
-    int         excess;
+    int		excess;
 
     if (vts == NULL || vts[0] == 0)
 	return (col / ts) * ts;
@@ -1804,7 +1804,7 @@
 	&& curbuf->b_p_ts == tabstop_first(new_vts_array))
 	; // not changed
     else if (tabstop_count(curbuf->b_p_vts_array) > 0
-        && tabstop_eq(curbuf->b_p_vts_array, new_vts_array))
+	&& tabstop_eq(curbuf->b_p_vts_array, new_vts_array))
 	; // not changed
     else
 	redraw_curbuf_later(NOT_VALID);