cv::VideoCapture of RTSP stream claims to be open when connection is refused (Bug #3867)

OpenCV version: 3.0 built from git repo
OS: Ubuntu 14.04
Compiler: Gcc 4.8.2

I use the following code to create a video capture object of an RTSP stream based on a server on my network.

@ try {
m_cam = new cv::VideoCapture(m_address);
}catch(cv::Exception &e) {
emit log("Failed to open RTSP stream at: " + QString::fromStdString(m_address));
return -3;
}
if (!m_cam->isOpened()) {
emit log("Failed to open RTSP stream at: " + QString::fromStdString(m_address));
return -3;
}else {
emit log("RTSP stream opened at: " + QString::fromStdString(m_address));
}@

Sometimes the server works and sometimes it doesn't. When it doesn't work, I get the following error at the command line:

[tcp 0x2432c40] TCP connection to 10.0.0.12:8554 failed: Connection refused@

However none of the checks above indicate that there is an issue, and then my program hangs when I try to read a frame.
The object clearly knows that the connection has been refused, thus at the very least isOpened() should return false.