topology: Fix missing inclusion of ctype.h

Fix a compile warning:
  data.c:116:7: warning: implicit declaration of function 'isspace' [-Wimplicit-function-declaration]

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/src/topology/data.c b/src/topology/data.c
index ae664721935db06949b20fc3f1370dfd59835cd7..13e1e2bb60fb8185d90e54eff362811d9935afce 100644 (file)
--- a/src/topology/data.c
+++ b/src/topology/data.c
@@ -18,6 +18,7 @@
 
 #include "list.h"
 #include "tplg_local.h"
+#include <ctype.h>
 
 /* Get Private data from a file. */
 static int tplg_parse_data_file(snd_config_t *cfg, struct tplg_elem *elem)