Fix some initialization order issues introduced in r6755

These include the wide graph window not being suppressed when starting
the application in a fast mode.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6762 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

meterwidget.cpp

@@ -11,6 +11,7 @@
 MeterWidget::MeterWidget(QWidget * parent)
   : QWidget {parent}
   , m_signal {0}
+  , m_sigPeak {0}
 {
   for ( int i = 0; i < 10; i++ ) {
     signalQueue.enqueue(0);