perf ui/gtk: Setup browser window early

The ui__error/warning functions use gtk infobar or statusbar and pr_*
functions use statusbar too.  But after perf gtk context created but
those infobar and/or statusbar not yet set up, calling one of those
functions will get a segment fault.

Although current code has no problem, move these setting as early as
possible so that it can prevent the segfault from future change.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1356078018-31905-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/gtk/hists.c

@@ -180,6 +180,17 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist,
 
 	notebook = gtk_notebook_new();
 
+	gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 0);
+
+	info_bar = perf_gtk__setup_info_bar();
+	if (info_bar)
+		gtk_box_pack_start(GTK_BOX(vbox), info_bar, FALSE, FALSE, 0);
+
+	statbar = perf_gtk__setup_statusbar();
+	gtk_box_pack_start(GTK_BOX(vbox), statbar, FALSE, FALSE, 0);
+
+	gtk_container_add(GTK_CONTAINER(window), vbox);
+
 	list_for_each_entry(pos, &evlist->entries, node) {
 		struct hists *hists = &pos->hists;
 		const char *evname = perf_evsel__name(pos);
@@ -199,17 +210,6 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist,
 		gtk_notebook_append_page(GTK_NOTEBOOK(notebook), scrolled_window, tab_label);
 	}
 
-	gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 0);
-
-	info_bar = perf_gtk__setup_info_bar();
-	if (info_bar)
-		gtk_box_pack_start(GTK_BOX(vbox), info_bar, FALSE, FALSE, 0);
-
-	statbar = perf_gtk__setup_statusbar();
-	gtk_box_pack_start(GTK_BOX(vbox), statbar, FALSE, FALSE, 0);
-
-	gtk_container_add(GTK_CONTAINER(window), vbox);
-
 	gtk_widget_show_all(window);
 
 	perf_gtk__resize_window(window);