Add missing include file to avert warning

diff --git a/lib/fdpgen/xlayout.c b/lib/fdpgen/xlayout.c
index 1fa04cc6dfdd7b0c35e4ceba619e99efd2f0cb88..608c3387fefcc12d73046e2226915bd22fb003a3 100644 (file)
--- a/lib/fdpgen/xlayout.c
+++ b/lib/fdpgen/xlayout.c
@@ -33,6 +33,7 @@ Increase less between tries
 #include <xlayout.h>
 #include <adjust.h>
 #include <dbg.h>
+#include <ctype.h>
 
 /* Use bbox based force function */
 /* #define MS */