[Mac] Do not call CFRelease on HID properties

HID properties are callee-owned and should not be released by the
caller. Fixes crash (memory corruption) on device hot plugging.

diff --git a/Source/OpenTK/Platform/MacOS/HIDInput.cs b/Source/OpenTK/Platform/MacOS/HIDInput.cs
index 382e1f9..6deb0b9 100755 (executable)
--- a/Source/OpenTK/Platform/MacOS/HIDInput.cs
+++ b/Source/OpenTK/Platform/MacOS/HIDInput.cs
@@ -408,7 +408,6 @@ namespace OpenTK.Platform.MacOS
 
                 CFStringRef name_ref = NativeMethods.IOHIDDeviceGetProperty(device, NativeMethods.IOHIDProductKey);
                 string name = CF.CFStringGetCString(name_ref);
-                CF.CFRelease(name_ref);
 
                 List<int> button_elements = new List<int>();
                 CFArray element_array = new CFArray(element_array_ref);