lib: make sprint_canframe the buffer size aware snprintf_canframe

Make sure the library functions to convert CAN frames into ASCII
represenation do not exceed the given buffer size. This also applies
to the long CAN frame output library function.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>

asc2log.c

@@ -82,7 +82,7 @@ void prframe(FILE *file, struct timeval *tv, int dev, struct canfd_frame *cf, ch
 	else
 		fprintf(file, "canX ");
 
-	sprint_canframe(abuf, (cu_t *)cf, 0);
+	snprintf_canframe(abuf, sizeof(abuf), (cu_t *)cf, 0);
 	fprintf(file, "%s%s", abuf, extra_info);
 }