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-rw-r--r--src/modules/m_spanningtree.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/modules/m_spanningtree.cpp b/src/modules/m_spanningtree.cpp
index 967ef73ea..14d2ee61d 100644
--- a/src/modules/m_spanningtree.cpp
+++ b/src/modules/m_spanningtree.cpp
@@ -1393,7 +1393,7 @@ class TreeSocket : public InspSocket
if (usr && *usr)
{
char* permissions = usr;
- while (*permissions != ',')
+ while ((*permissions) && (*permissions != ','))
{
ModeHandler* mh = ServerInstance->Modes->FindPrefix(*permissions);
if (mh)