perf hists browser: Fix indentation of folded sign on --hierarchy

It should indent 2 spaces for folded sign and a whitespace.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20161108130833.9263-2-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/browsers/hists.c

@@ -1337,8 +1337,8 @@ static int hist_browser__show_hierarchy_entry(struct hist_browser *browser,
 		}
 
 		if (first) {
-			ui_browser__printf(&browser->b, "%c", folded_sign);
-			width--;
+			ui_browser__printf(&browser->b, "%c ", folded_sign);
+			width -= 2;
 			first = false;
 		} else {
 			ui_browser__printf(&browser->b, "  ");