control: eld - add missing ctype.h header inclusion

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/src/control/eld.c b/src/control/eld.c
index c4169c2f9c6dfb4cb2f92c0d634a472c1d100a46..1e161eb1d271fae7f4cd3822aa7e90fc56d1e8d7 100644 (file)
--- a/src/control/eld.c
+++ b/src/control/eld.c
@@ -30,6 +30,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
+#include <ctype.h>
 #include "control_local.h"
 
 static void __fill_eld_ctl_id(snd_ctl_elem_id_t *id, int dev, int subdev)