More constructor style clean-up.

firmware/baseband/main.cpp

@@ -113,8 +113,7 @@ static __attribute__((noreturn)) msg_t baseband_fn(void *arg) {
 
 		stats.process(buffer,
 			[](const BasebandStatistics statistics) {
-				BasebandStatisticsMessage message;
+				const BasebandStatisticsMessage message { statistics };
-				message.statistics = statistics;
 				shared_memory.application_queue.push(message);
 			}
 		);
@@ -138,8 +137,7 @@ static __attribute__((noreturn)) msg_t rssi_fn(void *arg) {
 		stats.process(
 			buffer,
 			[](const RSSIStatistics statistics) {
-				RSSIStatisticsMessage message;
+				const RSSIStatisticsMessage message { statistics };
-				message.statistics = statistics;
 				shared_memory.application_queue.push(message);
 			}
 		);

firmware/common/message.hpp

@@ -69,7 +69,9 @@ struct RSSIStatistics {
 class RSSIStatisticsMessage : public Message {
 public:
 	constexpr RSSIStatisticsMessage(
-	) : Message { ID::RSSIStatistics }
+		const RSSIStatistics& statistics
+	) : Message { ID::RSSIStatistics },
+		statistics { statistics }
 	{
 	}
 
@@ -87,7 +89,9 @@ struct BasebandStatistics {
 class BasebandStatisticsMessage : public Message {
 public:
 	constexpr BasebandStatisticsMessage(
-	) : Message { ID::BasebandStatistics }
+		const BasebandStatistics& statistics
+	) : Message { ID::BasebandStatistics },
+		statistics { statistics }
 	{
 	}