Fixed compiler warning
diff --git a/src/hidapi/SDL_hidapi.c b/src/hidapi/SDL_hidapi.c
index 1bb5756..a06c2cf 100644
--- a/src/hidapi/SDL_hidapi.c
+++ b/src/hidapi/SDL_hidapi.c
@@ -535,7 +535,9 @@
     struct PLATFORM_hid_device_info *raw_dev;
 #endif /* HAVE_PLATFORM_BACKEND */
     struct hid_device_info *devs = NULL, *last = NULL, *new_dev;
+#ifdef SDL_LIBUSB_DYNAMIC
     SDL_bool bFound;
+#endif
 
     if (SDL_hidapi_wasinit == SDL_FALSE) {
         hid_init();