perf map browser: Exit just on well known key presses

Initial motivation was to avoid the confusing exit when when '/' is
pressed in non verbose mode, as specified in the help line searches
are only available in verbose mode.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-20xezxim2y4agmkx7f3sucll@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/browsers/map.c

@@ -80,12 +80,20 @@ static int map_browser__run(struct map_browser *self)
 	while (1) {
 		key = ui_browser__run(&self->b, 0);
 
-		if (verbose && key == '/')
+		switch (key) {
+		case '/':
+			if (verbose)
 				map_browser__search(self);
-		else
+		default:
 			break;
+                case K_LEFT:
+                case K_ESC:
+                case 'q':
+                case CTRL('c'):
+                        goto out;
 		}
-
+	}
+out:
 	ui_browser__hide(&self->b);
 	return key;
 }