Diff of /sys_win.h [17b940] .. [bb55bf] Maximize Restore

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--- a/sys_win.h
+++ b/sys_win.h
@@ -119,11 +119,10 @@
 
 #ifdef _DLL
 extern HINSTANCE hDllInstance;
-extern HWND wndOwner;
 #else
 #define hDllInstance 0
-#define wndOwner 0
 #endif
+HWND wndOwner;
 
 void SetWindowOwner(HWND Owner);
 void CenterDialog(HWND hDlg);