Ensure dlcb is defined before calling it

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c
index ebfd0425..121ba86d 100644
--- a/lib/libalpm/dload.c
+++ b/lib/libalpm/dload.c
@@ -100,7 +100,9 @@ static int curl_progress(void *filename, double dltotal, double dlnow,
 		return 1;
 	}
 
-	handle->dlcb((const char*)filename, (long)dlnow, (long)dltotal);
+	if(handle->dlcb) {
+		handle->dlcb((const char*)filename, (long)dlnow, (long)dltotal);
+	}
 
 	prevprogress = dlnow;