Merge pull request #12869 from kivaisan/fix_lwip_socket_close_with_tr…

…aces_5_15 LWIP: don't pbuf_free(NULL) on socket close (5.15-branch)
ARMmbed · Apr 27, 2020 · 52f1f28 · 52f1f28
2 parents ccef87e + 9934496
commit 52f1f28
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/features/lwipstack/LWIPStack.cpp b/features/lwipstack/LWIPStack.cpp
@@ -277,7 +277,9 @@ nsapi_error_t LWIP::socket_close(nsapi_socket_t handle)
         _event_flag.wait_any(TCP_CLOSED_FLAG, TCP_CLOSE_TIMEOUT);
     }
 #endif
-    pbuf_free(s->buf);
+    if (s->buf) {
+        pbuf_free(s->buf);
+    }
     err_t err = netconn_delete(s->conn);
     arena_dealloc(s);
     return err_remap(err);