ext4: use seq_putc() in two functions

Single characters (line breaks) should be put into a sequence.
Thus use the corresponding function “seq_putc”.

This issue was transformed by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://patch.msgid.link/076974ab-4da3-4176-89dc-0514e020c276@web.deSigned-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/mballoc.c

@@ -3075,8 +3075,7 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v)
 	seq_puts(seq, " ]");
 	if (EXT4_MB_GRP_BBITMAP_CORRUPT(&sg.info))
 		seq_puts(seq, " Block bitmap corrupted!");
-	seq_puts(seq, "\n");
-
+	seq_putc(seq, '\n');
 	return 0;
 }
 

fs/ext4/super.c

@@ -3045,7 +3045,7 @@ int ext4_seq_options_show(struct seq_file *seq, void *offset)
 
 	seq_puts(seq, sb_rdonly(sb) ? "ro" : "rw");
 	rc = _ext4_show_options(seq, sb, 1);
-	seq_puts(seq, "\n");
+	seq_putc(seq, '\n');
 	return rc;
 }