fix segfault due to eager copying

Author: jamiebrynes7

spatialos-sdk/src/worker/logging.rs

@@ -216,7 +216,11 @@ impl LogsinkParameters {
     pub fn to_worker_sdk(&self) -> (Worker_LogsinkParameters, Vec<ReleaseCallbackHandle>) {
         let rotating_logfile_parameters = match self.logsink_type {
             LogsinkType::RotatingFile(ref params) => params.to_worker_sdk(),
-            _ => Default::default(),
+            _ => Worker_RotatingLogFileParameters {
+                log_prefix: WORKER_DEFAULTS_LOG_PREFIX.as_ptr() as *const i8,
+                max_log_files: 0,
+                max_log_file_size_bytes: 0,
+            },
         };
 
         let (log_callback_parameters, release_log_callback_handle) = match self.logsink_type {

spatialos-sdk/src/worker/parameters.rs

@@ -551,7 +551,11 @@ impl<'a> IntermediateConnectionParameters<'a> {
             built_in_metrics_report_period_millis: self
                 .params
                 .built_in_metrics_report_period_millis,
-            protocol_logging: Worker_ProtocolLoggingParameters::default(),
+            protocol_logging: Worker_ProtocolLoggingParameters {
+                log_prefix: WORKER_DEFAULTS_LOG_PREFIX.as_ptr() as *const i8,
+                max_log_files: 0,
+                max_log_file_size_bytes: 0,
+            },
             enable_protocol_logging_at_startup: 0,
             logsink_count: self.logsinks.len() as u32,
             logsinks: self.logsinks.as_ptr(),