Fix a nil pointer exception

main.go

@@ -153,6 +153,7 @@ munits:
 func treatFrames(frames chan []byte, client influxdb2.Client) {
 	first := true
 	writeAPI := client.WriteAPIBlocking("", "teleinfo/autogen")
+fframe:
 	for {
 		frame := <-frames
 
@@ -182,6 +183,9 @@ func treatFrames(frames chan []byte, client influxdb2.Client) {
 			}
 
 			if key == "DATE" {
+				if horodate == nil {
+					continue fframe
+				}
 				defaultHorodate = *horodate
 				continue
 			}