staging: most: core: remove trailing zero from text property

This patch removes trailing zeros from the strings returned by the
attributes available_datatypes and available_directions.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/mostcore/core.c

@@ -265,7 +265,7 @@ static ssize_t show_available_directions(struct most_c_obj *c,
 	if (c->iface->channel_vector[i].direction & MOST_CH_TX)
 		strcat(buf, "dir_tx ");
 	strcat(buf, "\n");
-	return strlen(buf) + 1;
+	return strlen(buf);
 }
 
 static ssize_t show_available_datatypes(struct most_c_obj *c,
@@ -284,7 +284,7 @@ static ssize_t show_available_datatypes(struct most_c_obj *c,
 	if (c->iface->channel_vector[i].data_type & MOST_CH_ISOC_AVP)
 		strcat(buf, "isoc_avp ");
 	strcat(buf, "\n");
-	return strlen(buf) + 1;
+	return strlen(buf);
 }
 
 static