tracing: Fix indentation issue

There is a declaration that is indented one level too deeply, remove
the extraneous tab.

Link: http://lkml.kernel.org/r/20191221154825.33073-1-colin.king@canonical.com

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

kernel/trace/trace_seq.c

@@ -381,7 +381,7 @@ int trace_seq_hex_dump(struct trace_seq *s, const char *prefix_str,
 		       int prefix_type, int rowsize, int groupsize,
 		       const void *buf, size_t len, bool ascii)
 {
-		unsigned int save_len = s->seq.len;
+	unsigned int save_len = s->seq.len;
 
 	if (s->full)
 		return 0;