BUILD/MINOR: stick-table: Compilation fix.

Missing header to dereference struct peers pointer from struct table.
diff --git a/include/types/stick_table.h b/include/types/stick_table.h
index 695a75c..a6a4a49 100644
--- a/include/types/stick_table.h
+++ b/include/types/stick_table.h
@@ -31,6 +31,7 @@
 #include <eb32tree.h>
 #include <common/memory.h>
 #include <types/freq_ctr.h>
+#include <types/peers.h>
 #include <types/sample.h>
 
 /* The types of extra data we can store in a stick table */