forgot a ;

nonfree/controller/CtlUtil.hpp

@@ -16,10 +16,10 @@ std::vector<std::string> split(std::string str, char delim);
 
 std::string url_encode(const std::string& value);
 
-std::string random_hex_string(std::size_t length)
+std::string random_hex_string(std::size_t length);
 
 #ifdef ZT1_CENTRAL_CONTROLLER
-	void create_gcp_pubsub_topic_if_needed(std::string project_id, std::string topic_id);
+void create_gcp_pubsub_topic_if_needed(std::string project_id, std::string topic_id);
 #endif
 
 }	// namespace ZeroTier