update protobuf-c
diff --git a/third_party/protobuf-c b/third_party/protobuf-c
index 006d69b..80041cb 160000
--- a/third_party/protobuf-c
+++ b/third_party/protobuf-c
@@ -1 +1 @@
-Subproject commit 006d69bd8481738323c58af5cd4c8477d09eb9f5
+Subproject commit 80041cbeb9b7729196d0d5ac56103b9b8713d7f0