use a variable instead of a fn for hard-coded check

winit/src/application/drag_resize.rs

@@ -1,5 +1,27 @@
 use winit::window::{CursorIcon, ResizeDirection};
 
+#[cfg(any(
+    all(
+        unix,
+        not(target_vendor = "apple"),
+        not(target_os = "android"),
+        not(target_os = "emscripten"),
+    ),
+    target_os = "windows",
+))]
+const DRAG_RESIZE_SUPPORTED: bool = true;
+
+#[cfg(not(any(
+    all(
+        unix,
+        not(target_vendor = "apple"),
+        not(target_os = "android"),
+        not(target_os = "emscripten"),
+    ),
+    target_os = "windows",
+)))]
+const DRAG_RESIZE_SUPPORTED: bool = false;
+
 /// If supported by winit, returns a closure that implements cursor resize support.
 pub fn event_func(
     window: &dyn winit::window::Window,
@@ -12,7 +34,7 @@ pub fn event_func(
         ) -> bool,
     >,
 > {
-    if drag_resize_supported() {
+    if DRAG_RESIZE_SUPPORTED {
         // Keep track of cursor when it is within a resizeable border.
         let mut cursor_prev_resize_direction = None;
 
@@ -62,27 +84,6 @@ pub fn event_func(
     }
 }
 
-/// Test if the current target should be assumed to have winit drag_resize support
-const fn drag_resize_supported() -> bool {
-    #[cfg(all(
-        unix,
-        not(target_vendor = "apple"),
-        not(target_os = "android"),
-        not(target_os = "emscripten")
-    ))]
-    {
-        return true;
-    }
-
-    #[cfg(target_os = "windows")]
-    {
-        return true;
-    }
-
-    #[allow(unreachable_code)]
-    false
-}
-
 /// Get the cursor icon that corresponds to the resize direction.
 fn resize_direction_cursor_icon(
     resize_direction: Option<ResizeDirection>,