unix/modos: Guard sys/statvfs.h include with MICROPY_PY_OS_STATVFS check.

pfalcon · pfalcon · commit f8e9ef5cd04e · 2015-10-18T02:54:20.000+03:00
E.g. Windows lacks this header.
diff --git a/unix/modos.c b/unix/modos.c
@@ -30,7 +30,9 @@
 #include <unistd.h>
 #include <errno.h>
 #include <stdlib.h>
+#if MICROPY_PY_OS_STATVFS
 #include <sys/statvfs.h>
+#endif
 
 #include "py/nlr.h"
 #include "py/runtime.h"
