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/ex_getln.c b/src/ex_getln.c
index 14489de..cbddfea 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -110,7 +110,7 @@
 {
     // remove trailing \v and the like
     while (len >= 2 && p[len - 2] == '\\'
-                        && vim_strchr((char_u *)"mMvVcCZ", p[len - 1]) != NULL)
+			&& vim_strchr((char_u *)"mMvVcCZ", p[len - 1]) != NULL)
        len -= 2;
 
     // true, if the pattern is empty, or the pattern ends with \| and magic is