fts: Do not deinit uncreated fts context

Fixes crash with fts-lucene and fts-solr when lib-fts wasn't used.
Patch by Teemu Huovila

diff --git a/src/plugins/fts/fts-user.c b/src/plugins/fts/fts-user.c
index e270e9b124271b2f562e15610060d46f7c3069c8..d80e35c30de798add9d78294c82483adfd3e12eb 100644 (file)
--- a/src/plugins/fts/fts-user.c
+++ b/src/plugins/fts/fts-user.c
@@ -212,5 +212,6 @@ void fts_mail_user_deinit(struct mail_user *user)
 {
        struct fts_user *fuser = FTS_USER_CONTEXT(user);
 
-       fts_user_free(fuser);
+       if (fuser != NULL)
+               fts_user_free(fuser);
 }