Cocoa: Fix AirPlay causing harmless init error

Emitting an error for one specific type of failure in retrieving the
correct name for a display is not very useful, especially when
initialization is otherwise unaffected.

There should be a path for information like that but this isn't it.

Fixes #1791

CONTRIBUTORS.md

@@ -89,6 +89,7 @@ video tutorials.
  - InKryption
  - IntellectualKitty
  - Aaron Jacobs
+ - JannikGM
  - Erik S. V. Jansson
  - jjYBdx4IL
  - Toni Jovanoski

README.md

@@ -245,6 +245,7 @@ information on what to include when reporting a bug.
    a fraction of a second (#1962)
  - [Cocoa] Bugfix: `kIOMasterPortDefault` was deprecated in macOS 12.0 (#1980)
  - [Cocoa] Bugfix: `kUTTypeURL` was deprecated in macOS 12.0 (#2003)
+ - [Cocoa] Bugfix: A connected Apple AirPlay would emit a useless error (#1791)
  - [X11] Bugfix: The CMake files did not check for the XInput headers (#1480)
  - [X11] Bugfix: Key names were not updated when the keyboard layout changed
    (#1462,#1528)

src/cocoa_monitor.m

@@ -98,11 +98,7 @@ static char* getMonitorName(CGDirectDisplayID displayID, NSScreen* screen)
     IOObjectRelease(it);
 
     if (!service)
-    {
-        _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Cocoa: Failed to find service port for display");
         return _glfw_strdup("Display");
-    }
 
     CFDictionaryRef names =
         CFDictionaryGetValue(info, CFSTR(kDisplayProductName));