Move full screen cursor centering to shared code

src/cocoa_window.m

@@ -1178,9 +1178,6 @@ int _glfwPlatformCreateWindow(_GLFWwindow* window,
         _glfwPlatformShowWindow(window);
         _glfwPlatformFocusWindow(window);
         acquireMonitor(window);
-
-        if (wndconfig->centerCursor)
-            centerCursor(window);
     }
 
     return GLFW_TRUE;

src/win32_window.c

@@ -1244,9 +1244,6 @@ int _glfwPlatformCreateWindow(_GLFWwindow* window,
         _glfwPlatformFocusWindow(window);
         acquireMonitor(window);
         fitToMonitor(window);
-
-        if (wndconfig->centerCursor)
-            centerCursor(window);
     }
 
     return GLFW_TRUE;

src/window.c

@@ -226,7 +226,16 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
         }
     }
 
-    if (!window->monitor)
+    if (window->monitor)
+    {
+        if (wndconfig.centerCursor)
+        {
+            int width, height;
+            _glfwPlatformGetWindowSize(window, &width, &height);
+            _glfwPlatformSetCursorPos(window, width / 2.0, height / 2.0);
+        }
+    }
+    else
     {
         if (wndconfig.visible)
         {

src/x11_window.c

@@ -1975,9 +1975,6 @@ int _glfwPlatformCreateWindow(_GLFWwindow* window,
         _glfwPlatformShowWindow(window);
         updateWindowMode(window);
         acquireMonitor(window);
-
-        if (wndconfig->centerCursor)
-            centerCursor(window);
     }
 
     XFlush(_glfw.x11.display);