Hang when vswhere produces no output

I'm not entirely sure how, but I've ended up with the situation where I have vswhere.exe, but no actual Visual Studio install (Just MSBuild/build tools, i think?)

Obviously I'm in the wrong for not having a working VS install, but I don't think the tool should hang either :)

As best as I can tell, it's hanging on the ReadFile at:

cv2pdb/src/mspdb.cpp

Lines 204 to 210 in c99df6c

    
           CloseHandle(processInformation.hThread); 
        
           DWORD length; 
        
           if (ReadFile(read, buffer, sizeof(buffer) - 1, &length, NULL)) 
        
           { 
        
           	buffer[length] = '\0'; 
        
           	vsPath += buffer;

due to read being a pipe, and vswhere producing no output?

Procmon shows that's what it did last before hanging forever, at any rate (it was still running when this screenshot was taken):

Fixed in https://github.com/rainers/cv2pdb/releases/tag/v0.51

	CloseHandle(processInformation.hThread);

	DWORD length;
	if (ReadFile(read, buffer, sizeof(buffer) - 1, &length, NULL))
	{
	buffer[length] = '\0';
	vsPath += buffer;