Update poll_windows.c

Set fd_size to 0 when freeing the fd_table array.

Closes #614

Signed-off-by: Nathan Hjelm <hjelmn@google.com>

libusb/os/poll_windows.c

diff --git a/libusb/os/poll_windows.c b/libusb/os/poll_windows.c
index c8eff81..243495b 100644
--- a/libusb/os/poll_windows.c
+++ b/libusb/os/poll_windows.c
@@ -65,6 +65,7 @@
 	fd_count--;
 	if (fd_count == 0) {
 		free(fd_table);
+		fd_size = 0;
 		fd_table = NULL;
 	}
 }

libusb/version_nano.h

diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index 8dc8177..4ec093e 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 11395
+#define LIBUSB_NANO 11396