fix: cppcheck

test/packet_inject/packet_inject.cpp

@@ -2,6 +2,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
+#include <assert.h>
 #include <arpa/inet.h>
 
 #include "toml.h"
@@ -10,7 +11,6 @@
 #include "stellar/session.h"
 #include "stellar/stellar_mq.h"
 
-
 #pragma GCC diagnostic ignored "-Wunused-parameter"
 
 #define LOG_ERR(fmt, ...) printf("ERROR [packet inject] " fmt, ##__VA_ARGS__)
@@ -431,7 +431,10 @@ static void on_sess_free(struct session *sess, void *sess_ctx, void *plugin_ctx)
 
 static void on_sess_msg(struct session *sess, int topic_id, const void *msg, void *sess_ctx, void *plugin_ctx)
 {
-    if(msg==NULL)return;// session closing, return directly
+    if (msg == NULL)
+    {
+        return;
+    }
 
     char buffer[1024] = {0};
     struct packet *pkt = (struct packet *)msg;