init: fix StopSendingMessages()

A typo made this function a no-op.

Bug: 150863651
Test: CF responds to messages appropriately
Change-Id: Iaae0264fae3f2b899ceb5ba0364a4773df1f7ca3
diff --git a/init/property_service.cpp b/init/property_service.cpp
index 8206522..a5fea7c 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -125,7 +125,7 @@
 
 void StopSendingMessages() {
     auto lock = std::lock_guard{accept_messages_lock};
-    accept_messages = true;
+    accept_messages = false;
 }
 
 bool CanReadProperty(const std::string& source_context, const std::string& name) {