libbb: do not use fflush_unlocked, musl does not like fflush_unlocked(NULL)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/include/libbb.h b/include/libbb.h
index bf356d7..3752df9 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -203,8 +203,9 @@
# define fgets(s,n,stream) fgets_unlocked(s,n,stream)
# undef fputs
# define fputs(s,stream) fputs_unlocked(s,stream)
-# undef fflush
-# define fflush(stream) fflush_unlocked(stream)
+/* musl <= 1.1.15 does not support fflush_unlocked(NULL) */
+//# undef fflush
+//# define fflush(stream) fflush_unlocked(stream)
# undef feof
# define feof(stream) feof_unlocked(stream)
# undef ferror