Sat>IP client -- Reset tuner lock status

Reset tuner lock status after TEARDOWN and SETUP messages.
This prevents accessing the pid handling code with the list of pids from the previous channel when there is no tuner lock.

Refs #13121

mythtv/libs/libmythtv/recorders/satiprtsp.cpp

@@ -126,6 +126,10 @@ bool SatIPRTSP::Setup(const QUrl& url)
             .arg(m_sessionid).arg(m_streamid).arg(m_timeout / 1000));
     emit(startKeepAlive(m_timeout));
 
+    // Reset tuner lock status
+    QMutexLocker locker(&m_sigmonLock);
+    m_hasLock = false;
+
     return true;
 }
 
@@ -185,6 +189,10 @@ bool SatIPRTSP::Teardown(void)
     m_valid = false;
     m_validOld = false;
 
+    // Reset tuner lock status
+    QMutexLocker locker(&m_sigmonLock);
+    m_hasLock = false;
+
     return result;
 }