Made checks in _get_common_ancestor a bit stricter to avoid XQueryTree

XErrors.

Made checks in _get_common_ancestor a bit stricter to avoid XQueryTree
eb0ab768 · Marcus Meissner · Alexandre Julliard · 87e4dbfd · eb0ab768
Commit eb0ab768 authored Apr 30, 2001 by Marcus Meissner Committed by Alexandre Julliard Apr 30, 2001
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event.c windows/x11drv/event.c +3 -3

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--- a/windows/x11drv/event.c
+++ b/windows/x11drv/event.c
@@ -513,14 +513,14 @@ static Window __get_common_ancestor( Window A, Window B,
  
    Window      root, *childrenB;
    unsigned    totalB;
-  
-    do
+
+    while( A != B && A && B )
    {
      TSXQueryTree( display, A, &root, &A, children, total );
      TSXQueryTree( display, B, &root, &B, &childrenB, &totalB );
      if( childrenB ) TSXFree( childrenB );
      if( *children ) TSXFree( *children ), *children = NULL;
-    } while( A != B && A && B );
+    }

    if( A && B )
    {