top: better indicator of selected field in mem view

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/procps/top.c b/procps/top.c
index c46797e..0f9cc62 100644
--- a/procps/top.c
+++ b/procps/top.c
@@ -797,7 +797,7 @@
 
 	display_topmem_header(scr_width, &lines_rem);
 	strcpy(line_buf, HDR_STR " COMMAND");
-	line_buf[5 + sort_field * 6] = '*';
+	line_buf[11 + sort_field * 6] = '<';
 	printf(OPT_BATCH_MODE ? "%.*s" : "\e[7m%.*s\e[0m", scr_width, line_buf);
 	lines_rem--;