coverity fixes

container/SharedRingBuffer.cpp

@@ -17,6 +17,9 @@ SharedRingBuffer::SharedRingBuffer(object_id_t objectId, uint8_t *buffer,
     mutex = MutexFactory::instance()->createMutex();
 }
 
+SharedRingBuffer::~SharedRingBuffer() {
+    MutexFactory::instance()->deleteMutex(mutex);
+}
 
 void SharedRingBuffer::setToUseReceiveSizeFIFO(size_t fifoDepth) {
     this->fifoDepth = fifoDepth;