Fix chat console not opening after formspec opened over it

The MainMenuManager set the console invisible when a
formspec opened over it, but didn't properly close it,
and the chat console never set itself visible again.

src/guiChatConsole.cpp

@@ -122,6 +122,8 @@ void GUIChatConsole::openConsole(f32 height)
 	m_desired_height_fraction = height;
 	m_desired_height = height * m_screensize.Y;
 	reformatConsole();
+	m_animate_time_old = getTimeMs();
+	IGUIElement::setVisible(true);
 	Environment->setFocus(this);
 	m_menumgr->createdMenu(this);
 }
@@ -243,6 +245,11 @@ void GUIChatConsole::animate(u32 msec)
 {
 	// animate the console height
 	s32 goal = m_open ? m_desired_height : 0;
+
+	// Set invisible if close animation finished (reset by openConsole)
+	if (!m_open && m_height == 0)
+		IGUIElement::setVisible(false);
+
 	if (m_height != goal)
 	{
 		s32 max_change = msec * m_screensize.Y * (m_height_speed / 1000.0);
@@ -628,3 +635,13 @@ bool GUIChatConsole::OnEvent(const SEvent& event)
 	return Parent ? Parent->OnEvent(event) : false;
 }
 
+void GUIChatConsole::setVisible(bool visible)
+{
+	m_open = visible;
+	IGUIElement::setVisible(visible);
+	if (!visible) {
+		m_height = 0;
+		recalculateConsolePosition();
+	}
+}
+

src/guiChatConsole.h

@@ -77,6 +77,8 @@ class GUIChatConsole : public gui::IGUIElement
 
 	virtual bool OnEvent(const SEvent& event);
 
+	virtual void setVisible(bool visible);
+
 private:
 	void reformatConsole();
 	void recalculateConsolePosition();