perf list: Avoid extra : for --raw metrics

When printing the metrics raw, don't print : after the metricgroups.
This helps the command line completion to complete those too.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190628220737.13259-2-andi@firstfloor.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/metricgroup.c

@@ -375,7 +375,7 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
 		struct mep *me = container_of(node, struct mep, nd);
 
 		if (metricgroups)
-			printf("%s%s%s", me->name, metrics ? ":" : "", raw ? " " : "\n");
+			printf("%s%s%s", me->name, metrics && !raw ? ":" : "", raw ? " " : "\n");
 		if (metrics)
 			metricgroup__print_strlist(me->metrics, raw);
 		next = rb_next(node);