WINGs: Fix incorrect findCloseColor exact flag value

In case the color cannot be allocated exactly by createRGBAColor function,
the findCloseColor function is used as a failover function to find a color close to the requested color.
By definition that color is then not exact.
createRGBAColor exact flag should be 1 while findCloseColor exact flag should be 0

WINGs/wcolor.c

@@ -51,7 +51,7 @@ static WMColor *findCloseColor(WMScreen * scr, unsigned short red, unsigned shor
 	color->refCount = 1;
 	color->color = xcolor;
 	color->alpha = alpha;
-	color->flags.exact = 1;
+	color->flags.exact = 0;
 	color->gc = NULL;
 
 	return color;