osx.diff

diff --git a/src/os/macosx/macos.mm b/src/os/macosx/macos.mm
index ee209917b6..99c17b2687 100644
--- a/src/os/macosx/macos.mm
+++ b/src/os/macosx/macos.mm
@@ -31,24 +31,13 @@ static NSAutoreleasePool *_ottd_autorelease_pool;
  * @param return_major major version of the os. This would be 10 in the case of 10.4.11
  * @param return_minor minor version of the os. This would be 4 in the case of 10.4.11
  * @param return_bugfix bugfix version of the os. This would be 11 in the case of 10.4.11
- * A return value of -1 indicates that something went wrong and we don't know.
  */
 void GetMacOSVersion(int *return_major, int *return_minor, int *return_bugfix)
 {
-	*return_major = -1;
-	*return_minor = -1;
-	*return_bugfix = -1;
-
-	if ([[ NSProcessInfo processInfo] respondsToSelector:@selector(operatingSystemVersion) ]) {
-		IMP sel = [ [ NSProcessInfo processInfo] methodForSelector:@selector(operatingSystemVersion) ];
-		NSOperatingSystemVersion ver = ((NSOperatingSystemVersion (*)(id, SEL))sel)([ NSProcessInfo processInfo], @selector(operatingSystemVersion));
-
-		*return_major = (int)ver.majorVersion;
-		*return_minor = (int)ver.minorVersion;
-		*return_bugfix = (int)ver.patchVersion;
-
-		return;
-	}
+	NSOperatingSystemVersion = [ [ NSProcessInfo processInfo ] operatingSystemVersion ];
+	*return_major = (int)ver.majorVersion;
+	*return_minor = (int)ver.minorVersion;
+	*return_bugfix = (int)ver.patchVersion;
 }
 
 #ifdef WITH_COCOA