[gtk+] Quartz: Fix incompatible types in assignment

[John Ralls <jralls src gnome org>]

commit d859c921c563c9f602ae4462bf860c5fe91625a5
Author: John Ralls <jralls ceridwen us>
Date:   Thu Mar 1 17:00:35 2012 -0800

    Quartz: Fix incompatible types in assignment
    
    NSEvent -scrollingDeltaX and -scrollingDeltaY aren't defined before
    10.7, so objc assumes that they return a pointer. Trying to cast to a
    float generates a compiler error.

 gdk/quartz/gdkevents-quartz.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/quartz/gdkevents-quartz.c b/gdk/quartz/gdkevents-quartz.c
index 58bc58b..7ae6a69 100644
--- a/gdk/quartz/gdkevents-quartz.c
+++ b/gdk/quartz/gdkevents-quartz.c
@@ -1325,7 +1325,7 @@ gdk_event_translate (GdkEvent *event,
         GdkScrollDirection direction;
 	float dx;
 	float dy;
-
+#ifdef AVAILABLE_MAC_OS_X_VERSION_10_7_AND_LATER
 	if (gdk_quartz_osx_version() >= GDK_OSX_LION &&
 	    [nsevent hasPreciseScrollingDeltas])
 	  {
@@ -1338,7 +1338,7 @@ gdk_event_translate (GdkEvent *event,
 
             /* Fall through for scroll buttons emulation */
 	  }
-
+#endif
         dx = [nsevent deltaX];
         dy = [nsevent deltaY];