Cocoa: Fix segfault querying joystick elements

It is reportedly possible for IOHIDDeviceCopyMatchingElements to return
NULL on macOS 13 if the application lacks input monitoring permissions.

This commit only prevents the segfault.  More work will be needed to
correctly handle this situation, including Game Controller support.

Related to #2320
Closes #2321

(cherry picked from commit 2c1d31009f)

CONTRIBUTORS.md

@@ -83,6 +83,7 @@ video tutorials.
  - Andrew Gutekanst
  - Stephen Gutekanst
  - Jonathan Hale
+ - Daniel Hauser
  - hdf89shfdfs
  - Moritz Heinemann
  - Sylvain Hellegouarch

README.md

@@ -133,6 +133,8 @@ information on what to include when reporting a bug.
  - [Cocoa] Bugfix: Full screen windows were resizable by the user (#2377,#2405)
  - [Cocoa] Bugfix: Full screen windows were miniaturized when clicked on macOS
    10.15 (#2377,#2405)
+ - [Cocoa] Bugfix: Querying joystick elements could reportedly segfault on macOS
+   13 Ventura (#2320)
  - [Wayland] Added improved fallback window decorations via libdecor (#1639,#1693)
  - [Wayland] Bugfix: Connecting a mouse after `glfwInit` would segfault (#1450)
  - [Wayland] Disabled alpha channel for opaque windows on systems lacking

src/cocoa_joystick.m

@@ -137,6 +137,14 @@ static void matchCallback(void* context,
             return;
     }
 
+    CFArrayRef elements =
+        IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
+
+    // It is reportedly possible for this to fail on macOS 13 Ventura
+    // if the application does not have input monitoring permissions
+    if (!elements)
+        return;
+
     axes    = CFArrayCreateMutable(NULL, 0, NULL);
     buttons = CFArrayCreateMutable(NULL, 0, NULL);
     hats    = CFArrayCreateMutable(NULL, 0, NULL);
@@ -180,9 +188,6 @@ static void matchCallback(void* context,
                 name[8], name[9], name[10]);
     }
 
-    CFArrayRef elements =
-        IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
-
     for (i = 0;  i < CFArrayGetCount(elements);  i++)
     {
         IOHIDElementRef native = (IOHIDElementRef)