copy_event/free_event: Handle NULL event

1 files changed, 4 insertions, 0 deletions

diff --git a/libcrystfel/src/events.c b/libcrystfel/src/events.c
index 8e4eb861..d0e521d3 100644
--- a/libcrystfel/src/events.c
+++ b/libcrystfel/src/events.c
@@ -150,6 +150,8 @@ struct event *copy_event(struct event *ev)
 	struct event *new_ev;
 	int pi, di;
 
+	if ( ev == NULL ) return NULL;
+
 	if ( ev->dim_length == 0 && ev->path_length == 0) {
 
 		new_ev = initialize_event();
@@ -252,6 +254,8 @@ void free_event(struct event *ev)
 {
 	int pi;
 
+	if ( ev == NULL ) return;
+
 	if ( ev->path_length != 0 ) {
 		for ( pi=0; pi<ev->path_length; pi++ ) {
 			free(ev->path_entries[pi]);