No significant changes, just get rid of hard TABs

Replace TABs with spaces, get rid of trailing whitespace.

src/osx/cocoa/window.mm

@@ -2145,10 +2145,10 @@ public:
 
         // Subviews are ordered from back to front meaning one that is already lower will have an lower index.
         NSComparisonResult result = (firstI < secondI)
-		?   NSOrderedAscending /* -1 */
-		:   (firstI > secondI)
-		?   NSOrderedDescending /* 1 */
-		:   NSOrderedSame /* 0 */;
+        ?   NSOrderedAscending /* -1 */
+        :   (firstI > secondI)
+        ?   NSOrderedDescending /* 1 */
+        :   NSOrderedSame /* 0 */;
 
         return result;
     }
@@ -2177,14 +2177,13 @@ static NSComparisonResult CocoaRaiseWindowCompareFunction(id first, id second, v
 
 void wxWidgetCocoaImpl::Raise()
 {
-	NSView* nsview = m_osxView;
+    NSView* nsview = m_osxView;
 
     NSView *superview = [nsview superview];
     CocoaWindowCompareContext compareContext(nsview, [superview subviews]);
 
-    [superview sortSubviewsUsingFunction:
-	 CocoaRaiseWindowCompareFunction
-								 context: &compareContext];
+    [superview sortSubviewsUsingFunction: CocoaRaiseWindowCompareFunction
+                                 context: &compareContext];
 
 }
 
@@ -2206,14 +2205,13 @@ static NSComparisonResult CocoaLowerWindowCompareFunction(id first, id second, v
 
 void wxWidgetCocoaImpl::Lower()
 {
-	NSView* nsview = m_osxView;
+    NSView* nsview = m_osxView;
 
     NSView *superview = [nsview superview];
     CocoaWindowCompareContext compareContext(nsview, [superview subviews]);
 
-    [superview sortSubviewsUsingFunction:
-	 CocoaLowerWindowCompareFunction
-								 context: &compareContext];
+    [superview sortSubviewsUsingFunction: CocoaLowerWindowCompareFunction
+                                 context: &compareContext];
 }
 
 void wxWidgetCocoaImpl::ScrollRect( const wxRect *WXUNUSED(rect), int WXUNUSED(dx), int WXUNUSED(dy) )