Uses the iOS 9 macro on the method name only, no need to wrap its implementation too.

Ignacio Romero Zurbuchen · Ignacio Romero · commit 44c861ee6a37 · 2015-09-14T14:58:52.000-03:00
diff --git a/Source/Classes/SLKTextViewController.m b/Source/Classes/SLKTextViewController.m
@@ -2147,15 +2147,12 @@ - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrie
 
 #ifdef __IPHONE_9_0
 - (UIInterfaceOrientationMask)supportedInterfaceOrientations
-{
-    return UIInterfaceOrientationMaskAll;
-}
 #else
 - (NSUInteger)supportedInterfaceOrientations
+#endif
 {
     return UIInterfaceOrientationMaskAll;
 }
-#endif
 
 - (BOOL)shouldAutorotate
 {

Original file line number	Diff line number	Diff line change
`@@ -2147,15 +2147,12 @@ - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrie`
`2147`	`2147`
`2148`	`2148`	`#ifdef __IPHONE_9_0`
`2149`	`2149`	`- (UIInterfaceOrientationMask)supportedInterfaceOrientations`
`2150`		`-{`
`2151`		`- return UIInterfaceOrientationMaskAll;`
`2152`		`-}`
`2153`	`2150`	`#else`
`2154`	`2151`	`- (NSUInteger)supportedInterfaceOrientations`
	`2152`	`+#endif`
`2155`	`2153`	`{`
`2156`	`2154`	`return UIInterfaceOrientationMaskAll;`
`2157`	`2155`	`}`
`2158`		`-#endif`
`2159`	`2156`
`2160`	`2157`	`- (BOOL)shouldAutorotate`
`2161`	`2158`	`{`