Fix unreachable panic after setting ControlFlow to Poll during some RedrawRequested events.

Osspial · Osspial · commit bb6ab1bb6e95 · 2018-11-08T22:52:13.000-05:00
diff --git a/src/platform_impl/windows/event_loop.rs b/src/platform_impl/windows/event_loop.rs
@@ -400,7 +400,9 @@ impl<T> EventLoopRunner<T> {
                     };
                     self.call_event_handler(Event::NewEvents(start_cause));
                 },
-                ControlFlow::Poll |
+                // This can be reached if the control flow is changed to poll during a `RedrawRequested`
+                // that was sent after `EventsCleared`.
+                ControlFlow::Poll => self.call_event_handler(Event::NewEvents(StartCause::Poll)),
                 ControlFlow::Exit => unreachable!()
             }
         }

Original file line number	Diff line number	Diff line change
`@@ -400,7 +400,9 @@ impl<T> EventLoopRunner<T> {`
`400`	`400`	`};`
`401`	`401`	`self.call_event_handler(Event::NewEvents(start_cause));`
`402`	`402`	`},`
`403`		`- ControlFlow::Poll \|`
	`403`	+ // This can be reached if the control flow is changed to poll during a `RedrawRequested`
	`404`	+ // that was sent after `EventsCleared`.
	`405`	`+ ControlFlow::Poll => self.call_event_handler(Event::NewEvents(StartCause::Poll)),`
`404`	`406`	`ControlFlow::Exit => unreachable!()`
`405`	`407`	`}`
`406`	`408`	`}`