quadtree.c: Add a missing include

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>

diff --git a/quadtree.c b/quadtree.c
index b1475c5193850edccef7bdd3dcbbba14f5f463c1..ba8cf9f1999372ce135459e23fce46aa2e63051e 100644 (file)
--- a/quadtree.c
+++ b/quadtree.c
@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 #include "quadtree.h"
 
 /**