centralize setting of AdapterStarted state

src/plugins/debugger/gdb/attachgdbadapter.cpp

@@ -73,7 +73,6 @@ void AttachGdbAdapter::startAdapter()
 void AttachGdbAdapter::handleGdbStarted()
 {
     QTC_ASSERT(state() == AdapterStarting, qDebug() << state());
-    setState(AdapterStarted);
     emit adapterStarted();
 }
 

src/plugins/debugger/gdb/coregdbadapter.cpp

@@ -73,7 +73,6 @@ void CoreGdbAdapter::startAdapter()
 void CoreGdbAdapter::handleGdbStarted()
 {
     QTC_ASSERT(state() == AdapterStarting, qDebug() << state());
-    setState(AdapterStarted);
     emit adapterStarted();
 }
 

src/plugins/debugger/gdb/gdbengine.cpp

@@ -4100,6 +4100,7 @@ void GdbEngine::handleAdapterStartFailed(const QString &msg, const QString &sett
 
 void GdbEngine::handleAdapterStarted()
 {
+    setState(AdapterStarted);
     debugMessage(_("ADAPTER SUCCESSFULLY STARTED, INITIALIZING GDB"));
 
     postCommand(_("show version"), CB(handleShowVersion));

src/plugins/debugger/gdb/plaingdbadapter.cpp

@@ -93,7 +93,6 @@ void PlainGdbAdapter::startAdapter()
 void PlainGdbAdapter::handleGdbStarted()
 {
     QTC_ASSERT(state() == AdapterStarting, qDebug() << state());
-    setState(AdapterStarted);
     emit adapterStarted();
 }
 

src/plugins/debugger/gdb/remotegdbadapter.cpp

@@ -93,7 +93,6 @@ void RemoteGdbAdapter::startAdapter()
 void RemoteGdbAdapter::handleGdbStarted()
 {
     QTC_ASSERT(state() == AdapterStarting, qDebug() << state());
-    setState(AdapterStarted);
     emit adapterStarted();
 }
 

src/plugins/debugger/gdb/trkgdbadapter.cpp

@@ -1563,7 +1563,6 @@ void TrkGdbAdapter::maybeAdapterStarted()
 {
     QTC_ASSERT(state() == AdapterStarting, qDebug() << state());
     if (m_gdbProc.state() == QProcess::Running && m_trkDevice.isOpen()) {
-        setState(AdapterStarted);
         emit adapterStarted();
     }
 }