transaction: Don't print empty string

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/libpakfire/transaction.c b/src/libpakfire/transaction.c
index 2379c691825f52d368612aa94e66a90373c07b9b..8a8ca3af062407f653c4a3256d5ca76000711eb3 100644 (file)
--- a/src/libpakfire/transaction.c
+++ b/src/libpakfire/transaction.c
@@ -629,7 +629,8 @@ PAKFIRE_EXPORT char* pakfire_transaction_dump(struct pakfire_transaction* transa
        // Join all lines together
        char* string = pakfire_transaction_join_lines(lines);
 
-       DEBUG(transaction->pakfire, "Transaction: %s\n", string);
+       if (string)
+               DEBUG(transaction->pakfire, "Transaction: %s\n", string);
 
        // Free lines
        if (lines) {