fix(GraphicsOutput::modes): iterate over 0..max_mode

Author: toku-sa-n

src/proto/console/gop.rs

@@ -444,9 +444,10 @@ impl<'gop> Iterator for ModeIter<'gop> {
     fn next(&mut self) -> Option<Self::Item> {
         let index = self.current;
         if index < self.max {
+            let m = self.gop.query_mode(index).ok().or_else(|| self.next());
             self.current += 1;
 
-            self.gop.query_mode(index).ok().or_else(|| self.next())
+            m
         } else {
             None
         }