libxlsxwriter: Add a TODO about implicit declaration of fopen64

diff --git a/libxlsxwriter/TODO b/libxlsxwriter/TODO
new file mode 100644 (file)
index 0000000..a04c60b
--- /dev/null
+++ b/libxlsxwriter/TODO
@@ -0,0 +1,3 @@
+- On NetBSD there are warnings about implicit declaration of fopen64, probably
+  a `|| defined(__NetBSD__)' in third_party/minizip/ioapi.h:53 needs to be
+  added.