saving_images regression test Crashes parallel engine on Windows

[biagas]

Describe the bug

When the quickrecipes/saving_images test is run in parallel on Windows, it crashes the engine.

Here's what's printed to the terminal window when the test is run:

I ran the test through the Visual Studio debugger, and it is segv'ing in the 'saving_an_image' function of the test, on this loop in NetworkManager::RenderGeometry, because the 'haveCells' array of 'renderState' is empty.

visit/src/engine/main/NetworkManager.C

Lines 7280 to 7282 in 3ffa1a4

	for (int i = 0; i < nranks; ++i)
	if (renderState.haveCells[i])
	ranksToComp.push_back(i);

Desktop

• OS and version: Windows
• VisIt Version: develop
• Server info (if applicable):