Wayland: Fix fallback decorations emitting errors

A GLFW_CURSOR_UNAVAILABLE error would be emitted each time the cursor
moved over the fallback decorations if the standard cursor shape
appropriate for that part was missing on the system.

These errors served no useful purpose and have been removed.

README.md

@@ -384,6 +384,7 @@ information on what to include when reporting a bug.
    decorations
  - [Wayland] Bugfix: Connecting a mouse after `glfwInit` would segfault (#1450)
  - [Wayland] Bugfix: Joysticks connected after `glfwInit` were not detected (#2198)
+ - [Wayland] Bugfix: Fallback decorations emitted `GLFW_CURSOR_UNAVAILABLE` errors
  - [POSIX] Removed use of deprecated function `gettimeofday`
  - [POSIX] Bugfix: `CLOCK_MONOTONIC` was not correctly tested for or enabled
  - [Linux] Bugfix: Joysticks without buttons were ignored (#2042,#2043)

src/wl_window.c

@@ -1327,11 +1327,8 @@ static void setCursor(_GLFWwindow* window, const char* name)
 
     cursor = wl_cursor_theme_get_cursor(theme, name);
     if (!cursor)
-    {
-        _glfwInputError(GLFW_CURSOR_UNAVAILABLE,
-                        "Wayland: Standard cursor shape unavailable");
         return;
-    }
+
     // TODO: handle animated cursors too.
     image = cursor->images[0];