[Minor] Fix some more issues

Found by: coverity scan

3 files changed, 9 insertions, 5 deletions

diff --git a/src/libserver/rspamd_control.c b/src/libserver/rspamd_control.c
index 0021485c3..b16ddf68f 100644
--- a/src/libserver/rspamd_control.c
+++ b/src/libserver/rspamd_control.c
@@ -781,7 +781,9 @@ rspamd_control_ignore_io_handler (int fd, short what, void *ud)
 	struct rspamd_control_reply rep;
 
 	/* At this point we just ignore replies from the workers */
-	(void) !read (fd, &rep, sizeof (rep));
+	if (read (fd, &rep, sizeof (rep)) == -1) {
+		msg_debug("cannot read %d bytes: %s", sizeof(rep), strerror(errno));
+	}
 	rspamd_control_stop_pending (elt);
 }
 
diff --git a/src/libserver/rspamd_symcache.c b/src/libserver/rspamd_symcache.c
index 41aa784b6..d1fb68672 100644
--- a/src/libserver/rspamd_symcache.c
+++ b/src/libserver/rspamd_symcache.c
@@ -588,8 +588,10 @@ rspamd_symcache_process_dep (struct rspamd_symcache *cache,
 		vdit = rspamd_symcache_find_filter (cache, dep->sym, false);
 
 		if (!vdit) {
-			msg_err_cache ("cannot add dependency from %s on %s: no dependency symbol registered",
-					dep->sym, dit->symbol);
+			if (dit) {
+				msg_err_cache ("cannot add dependency from %s on %s: no dependency symbol registered",
+						dep->sym, dit->symbol);
+			}
 		}
 		else {
 			msg_debug_cache ("process virtual dependency %s(%d) on %s(%d)", it->symbol,
@@ -698,7 +700,7 @@ rspamd_symcache_post_init (struct rspamd_symcache *cache)
 		vit = rspamd_symcache_find_filter (cache, ddep->from, false);
 		it = rspamd_symcache_find_filter (cache, ddep->from, true);
 
-		if (it == NULL) {
+		if (it == NULL || vit == NULL) {
 			msg_err_cache ("cannot register delayed dependency between %s and %s: "
 					"%s is missing", ddep->from, ddep->to, ddep->from);
 		}
diff --git a/src/libserver/ssl_util.c b/src/libserver/ssl_util.c
index b9fb175e5..40214ed89 100644
--- a/src/libserver/ssl_util.c
+++ b/src/libserver/ssl_util.c
@@ -637,7 +637,7 @@ rspamd_ssl_connection_new (gpointer ssl_ctx, struct ev_loop *ev_base,
 	conn->verify_peer = verify_peer;
 
 	if (log_tag) {
-		rspamd_strlcpy (conn->log_tag, log_tag, sizeof (log_tag));
+		rspamd_strlcpy (conn->log_tag, log_tag, sizeof (conn->log_tag));
 	}
 	else {
 		rspamd_random_hex (conn->log_tag, sizeof (log_tag) - 1);