v3: fix review follow-up regressions

Author: GGRei

vlib/sokol/sapp/sapp_structs.c.v

@@ -230,26 +230,20 @@ pub:
 
 pub type Swapchain = C.sapp_swapchain
 
-pub type Event = C.sapp_event
-
-pub type FnEventCb = fn (const_event &Event)
-
-pub type FnEventUserDataCb = fn (const_event &Event, user_data voidptr)
-
 @[typedef]
 pub struct C.sapp_desc {
 pub mut:
 	// these are the user-provided callbacks without user data
-	init_cb    fn ()     = unsafe { nil }
-	frame_cb   fn ()     = unsafe { nil }
-	cleanup_cb fn ()     = unsafe { nil }
-	event_cb   FnEventCb = unsafe { nil } // const sapp_event*
+	init_cb    fn ()       = unsafe { nil }
+	frame_cb   fn ()       = unsafe { nil }
+	cleanup_cb fn ()       = unsafe { nil }
+	event_cb   fn (&Event) = unsafe { nil } // &sapp_event
 
 	user_data           voidptr // these are the user-provided callbacks with user data
-	init_userdata_cb    fn (voidptr)      = unsafe { nil }
-	frame_userdata_cb   fn (voidptr)      = unsafe { nil }
-	cleanup_userdata_cb fn (voidptr)      = unsafe { nil }
-	event_userdata_cb   FnEventUserDataCb = unsafe { nil }
+	init_userdata_cb    fn (voidptr)         = unsafe { nil }
+	frame_userdata_cb   fn (voidptr)         = unsafe { nil }
+	cleanup_userdata_cb fn (voidptr)         = unsafe { nil }
+	event_userdata_cb   fn (&Event, voidptr) = unsafe { nil }
 
 	width                        int       // the preferred width of the window / canvas
 	height                       int       // the preferred height of the window / canvas
@@ -305,6 +299,8 @@ pub mut:
 	framebuffer_height int                         // = window_height * dpi_scale
 }
 
+pub type Event = C.sapp_event
+
 pub fn (e &Event) str() string {
 	return 'evt: frame_count=${e.frame_count}, type=${EventType(e.type)}'
 }