diff --git a/c b/c
index b6e38aaafa203130c151df581dde864763084835..521d5c5d3fb9580a2a458be99f39eb74ff33c506 160000
--- a/c
+++ b/c
@@ -1 +1 @@
-Subproject commit b6e38aaafa203130c151df581dde864763084835
+Subproject commit 521d5c5d3fb9580a2a458be99f39eb74ff33c506