Wayland: Fix partial framebuffer size retrieval

(cherry picked from commit 5f60c22)
glfw · Jul 16, 2020 · bd2fb9e · bd2fb9e
1 parent 85a169f
commit bd2fb9e
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diff --git a/README.md b/README.md
@@ -135,6 +135,7 @@ information on what to include when reporting a bug.
  - [X11] Bugfix: Keys pressed simultaneously with others were not always
    reported (#1112,#1415,#1472,#1616)
  - [Wayland] Bugfix: Repeated keys could be reported with `NULL` window (#1704)
+ - [Wayland] Bugfix: Retrieving partial framebuffer size would segfault
 
 
 ## Contact

diff --git a/src/wl_window.c b/src/wl_window.c
@@ -1118,8 +1118,10 @@ void _glfwPlatformGetFramebufferSize(_GLFWwindow* window,
                                      int* width, int* height)
 {
     _glfwPlatformGetWindowSize(window, width, height);
-    *width *= window->wl.scale;
-    *height *= window->wl.scale;
+    if (width)
+        *width *= window->wl.scale;
+    if (height)
+        *height *= window->wl.scale;
 }
 
 void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,