notepad: Set the window class small icon.

programs/notepad/main.c

@@ -743,6 +743,9 @@ int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE prev, LPSTR cmdline, int show)
     class.lpfnWndProc   = NOTEPAD_WndProc;
     class.hInstance     = Globals.hInstance;
     class.hIcon         = LoadIconW(Globals.hInstance, MAKEINTRESOURCEW(IDI_NOTEPAD));
+    class.hIconSm       = LoadImageW(Globals.hInstance, MAKEINTRESOURCEW(IDI_NOTEPAD), IMAGE_ICON,
+                                     GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
+                                     LR_SHARED);
     class.hCursor       = LoadCursorW(0, (LPCWSTR)IDC_ARROW);
     class.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
     class.lpszMenuName  = MAKEINTRESOURCEW(MAIN_MENU);