patch 8.0.0164: outdated and misplaced comments

Problem:    Outdated and misplaced comments.
Solution:   Fix the comments.
diff --git a/src/misc2.c b/src/misc2.c
index afafee1..c26f900 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -403,7 +403,7 @@
     int
 dec_cursor(void)
 {
- return dec(&curwin->w_cursor);
+    return dec(&curwin->w_cursor);
 }
 
     int