patch 8.2.2732: prompt for s///c in Ex mode can be wrong

Problem:    Prompt for s///c in Ex mode can be wrong.
Solution:   Position the cursor before showing the prompt. (closes #8073)
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 90a9403..6cd54d2 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -4153,6 +4153,7 @@
 			    if (curwin->w_cursor.col < 0)
 				curwin->w_cursor.col = 0;
 			    getvcol(curwin, &curwin->w_cursor, NULL, NULL, &ec);
+			    curwin->w_cursor.col = regmatch.startpos[0].col;
 			    if (subflags.do_number || curwin->w_p_nu)
 			    {
 				int numw = number_width(curwin) + 1;