Xtt history, wow set to 0 in constructor

xtt/lib/xtt/src/xtt_sevhist.cpp

@@ -128,7 +128,7 @@ XttSevHist::XttSevHist( void *parent_ctx,
 			int xn_color_theme,
 			int *sts) :
   xnav(parent_ctx), gcd(0), curve(0), rows(0), vsize(0), timerid(0), close_cb(0), help_cb(0), 
-  get_select_cb(0), first_scan(1), scctx(0), time_low_old(0), time_high_old(0), initial_period(time_ePeriod_),
+  get_select_cb(0), first_scan(1), scctx(0), wow(0), time_low_old(0), time_high_old(0), initial_period(time_ePeriod_),
   color_theme(xn_color_theme)
 {
   strncpy( title, filename, sizeof(title));