taskmgr: Set the window small icon.

programs/taskmgr/taskmgr.c

diff --git a/programs/taskmgr/taskmgr.c b/programs/taskmgr/taskmgr.c
index 01c6926..5958d5c 100644
--- a/programs/taskmgr/taskmgr.c
+++ b/programs/taskmgr/taskmgr.c
@@ -131,6 +131,10 @@
     LoadStringW(hInst, IDS_PERFORMANCE, wszPerformance, sizeof(wszPerformance)/sizeof(WCHAR));
 
     SendMessageW(hMainWnd, WM_SETICON, ICON_BIG, (LPARAM)LoadIcon(hInst, MAKEINTRESOURCE(IDI_TASKMANAGER)));
+    SendMessageW(hMainWnd, WM_SETICON, ICON_SMALL,
+                 (LPARAM)LoadImage(hInst, MAKEINTRESOURCE(IDI_TASKMANAGER), IMAGE_ICON,
+                                   GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
+                                   LR_SHARED));
 
     /* Initialize the Windows Common Controls DLL */
     InitCommonControls();