snmp: fixes leak of de_state

Bug: #4752.
(cherry picked from commit 28a3181a2de0101b0796058eeffac0180eef35d6)

diff --git a/rust/src/snmp/snmp.rs b/rust/src/snmp/snmp.rs
index 4a9fd8fa1f77d333f095aacb15978a3da63c88d0..cdc19c1c0053560360963d502b78d533f461ed1a 100644 (file)
--- a/rust/src/snmp/snmp.rs
+++ b/rust/src/snmp/snmp.rs
@@ -281,6 +281,9 @@ impl SNMPTransaction {
         if self.events != std::ptr::null_mut() {
             core::sc_app_layer_decoder_events_free_events(&mut self.events);
         }
+        if let Some(de_state) = self.de_state {
+            core::sc_detect_engine_state_free(de_state);
+        }
     }
 }