Fix WIFI_EVENT (#2817)

* Fix WIFI_EVENT

* Update esp-wifi/src/common_adapter/mod.rs

Co-authored-by: Dominic Fischer <14130965+Dominaezzz@users.noreply.github.com>

---------

Co-authored-by: Dominic Fischer <14130965+Dominaezzz@users.noreply.github.com>

esp-wifi/src/common_adapter/mod.rs

@@ -1,5 +1,3 @@
-use core::ptr::addr_of;
-
 use esp_wifi_sys::include::timeval;
 use hal::macros::ram;
 
@@ -201,10 +199,8 @@ pub unsafe extern "C" fn puts(s: *const u8) {
 }
 
 // #define ESP_EVENT_DEFINE_BASE(id) esp_event_base_t id = #id
-static mut EVT: i8 = 0;
 #[no_mangle]
-#[allow(unused_unsafe)]
-static mut WIFI_EVENT: esp_event_base_t = unsafe { addr_of!(EVT) };
+static mut WIFI_EVENT: esp_event_base_t = c"WIFI_EVENT".as_ptr();
 
 // stuff needed by wpa-supplicant
 #[no_mangle]