maildir: Another assert for saving messages.

diff --git a/src/lib-storage/index/maildir/maildir-save.c b/src/lib-storage/index/maildir/maildir-save.c
index 9bbee8498fb3841f2a08a3ce2feb0ed49998aed7..12eeaabe645ca51bf1835904e52ddc22d2fc8606 100644 (file)
--- a/src/lib-storage/index/maildir/maildir-save.c
+++ b/src/lib-storage/index/maildir/maildir-save.c
@@ -147,6 +147,8 @@ maildir_save_add(struct mail_save_context *_ctx, const char *tmp_fname)
        struct istream *input;
        unsigned int keyword_count;
 
+       i_assert(*tmp_fname != '\0');
+
        /* allow caller to specify recent flag only when uid is specified
           (we're replicating, converting, etc.). */
        if (_ctx->uid == 0)