core: Fix build on linux

Commit 7bc0ff3 left a parenthesis over which prevents succesful build.

Signed-off-by: Andrey Perevortkin <asavah@avh.od.ua>
diff --git a/libusb/libusbi.h b/libusb/libusbi.h
index 62246cb..6cc6f92 100644
--- a/libusb/libusbi.h
+++ b/libusb/libusbi.h
@@ -410,7 +410,7 @@
 static inline int usbi_using_timerfd(struct libusb_context *ctx)
 {
 #ifdef HAVE_TIMERFD
-	return ctx->timerfd >= 0);
+	return ctx->timerfd >= 0;
 #else
 	UNUSED(ctx);
 	return 0;
diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index e36b015..b691456 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 11447
+#define LIBUSB_NANO 11448