fix(nimble): Add fix to handle service reset during server start

nimble/host/src/ble_att_svr.c

@@ -3542,6 +3542,11 @@ ble_att_svr_free_start_mem(void)
         return;
     }
 #endif
+    /* Entries are allocated from the pool being torn down here; drop them
+     * first or the list heads keep dangling pointers across a restart.
+     */
+    ble_att_svr_reset();
+
     if (ble_att_svr_entry_mem) {
         nimble_platform_mem_free(ble_att_svr_entry_mem);
         ble_att_svr_entry_mem = NULL;

nimble/host/src/ble_gatts.c

@@ -1937,6 +1937,12 @@ ble_gatts_free_mem(void)
 void
 ble_gatts_stop(void)
 {
+#if MYNEWT_VAL(BLE_STATIC_TO_DYNAMIC)
+    if (ble_gatts_static_vars == NULL) {
+        ble_att_svr_stop();
+        return;
+    }
+#endif
     ble_gatts_free_mem();
 
     ble_hs_max_services = 0;