isl_sample.c: add missing include

diff --git a/isl_sample.c b/isl_sample.c
index 4ad8aeb..2a62368 100644 (file)
--- a/isl_sample.c
+++ b/isl_sample.c
@@ -2,6 +2,7 @@
 #include "isl_sample_piplib.h"
 #include "isl_vec.h"
 #include "isl_mat.h"
+#include "isl_seq.h"
 #include "isl_map_private.h"
 #include "isl_equalities.h"