The problem is that isActive() was changed to wait on the process exiting. When

The problem is that isActive() was changed to wait on the process exiting. When
the process exits, the member variable referring to the process was getting set
to 0 in the function PluginProcess::processFinished, but when the code in
PluginProcess::isActive after the m_currentProcess->waitForFinished(1000) was
executed, that variable was not checked against NULL value.

This bug can be reproduced with any service by disabling connectivity during
upload.

Changed back PluginProcess::isActive to return immediately with true or false,
depending on whether the plugin is running or not.