Moved scroll offset clearing to shared code.

src/win32/win32_window.c

@@ -1690,12 +1690,6 @@ void _glfwPlatformPollEvents(void)
     MSG msg;
     _GLFWwindow* window;
 
-    for (window = _glfwLibrary.windowListHead;  window;  window = window->next)
-    {
-        window->scrollX = 0;
-        window->scrollY = 0;
-    }
-
     window = _glfwLibrary.cursorLockWindow;
     if (window)
     {

src/window.c

@@ -70,6 +70,22 @@ static void closeFlaggedWindows(void)
 }
 
 
+//========================================================================
+// Clear scroll offsets for all windows
+//========================================================================
+
+void clearScrollOffsets(void)
+{
+    _GLFWwindow* window;
+
+    for (window = _glfwLibrary.windowListHead;  window;  window = window->next)
+    {
+        window->scrollX = 0;
+        window->scrollY = 0;
+    }
+}
+
+
 //========================================================================
 // Clear all input state
 //========================================================================
@@ -90,7 +106,7 @@ void clearInputState(_GLFWwindow* window)
     window->mousePosX = 0;
     window->mousePosY = 0;
 
-    // Set mouse wheel position to 0
+    // Set scroll offsets to (0,0)
     window->scrollX = 0;
     window->scrollY = 0;
 
@@ -1193,6 +1209,8 @@ GLFWAPI void glfwPollEvents(void)
         return;
     }
 
+    clearScrollOffsets();
+
     _glfwPlatformPollEvents();
 
     closeFlaggedWindows();
@@ -1211,6 +1229,8 @@ GLFWAPI void glfwWaitEvents(void)
         return;
     }
 
+    clearScrollOffsets();
+
     _glfwPlatformWaitEvents();
 
     closeFlaggedWindows();

src/x11/x11_window.c

@@ -1813,12 +1813,6 @@ void _glfwPlatformPollEvents(void)
 {
     _GLFWwindow* window;
 
-    for (window = _glfwLibrary.windowListHead;  window;  window = window->next)
-    {
-        window->scrollX = 0;
-        window->scrollY = 0;
-    }
-
     // Flag that the cursor has not moved
     window = _glfwLibrary.cursorLockWindow;
     if (window)