Improved aspect ratio icon

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

Resources/VLCMovieViewController~ipad.xib

@@ -520,7 +520,7 @@
         <image name="backIcon.png" width="32" height="16"/>
         <image name="forwardIcon.png" width="32" height="16"/>
         <image name="playIcon.png" width="19" height="17"/>
-        <image name="ratioIcon.png" width="23" height="18"/>
+        <image name="ratioIcon.png" width="15" height="15"/>
         <image name="repeat.png" width="23" height="18"/>
         <image name="resetIcon.png" width="24" height="30"/>
         <image name="speedIcon.png" width="19" height="19"/>

Resources/VLCMovieViewController~iphone.xib

@@ -707,7 +707,7 @@
         <image name="backIcon.png" width="32" height="16"/>
         <image name="forwardIcon.png" width="32" height="16"/>
         <image name="playIcon.png" width="19" height="17"/>
-        <image name="ratioIcon.png" width="23" height="18"/>
+        <image name="ratioIcon.png" width="15" height="15"/>
         <image name="repeat.png" width="23" height="18"/>
         <image name="resetIcon.png" width="24" height="30"/>
         <image name="speedIcon.png" width="19" height="19"/>