Show a "No Events" label when there are no events in the filter dialog

Uses profile.c:evn_foreach() to retrieve the number of events, which
if zero, no table is added in the dialog and the label is added instead.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/profile.c b/profile.c
index 62b465dfb..8b5feae23 100644
--- a/profile.c
+++ b/profile.c
@@ -303,7 +303,7 @@ static struct ev_select *ev_namelist;
 static int evn_allocated;
 static int evn_used;
 
-void evn_foreach(void (*callback)(const char *, int *, void *), void *data)
+int evn_foreach(void (*callback)(const char *, int *, void *), void *data)
 {
 	int i;
 
@@ -311,6 +311,7 @@ void evn_foreach(void (*callback)(const char *, int *, void *), void *data)
 		/* here we display an event name on screen - so translate */
 		callback(_(ev_namelist[i].ev_name), &ev_namelist[i].plot_ev, data);
 	}
+	return i;
 }
 
 void clear_events(void)