ConsoleCaptureStdOut fix

[Piratux]

Currently, ConsoleCaptureStdOut function only works as expected when it's called once with each alternating argument and the first call to it having argument true:

ConsoleCaptureStdOut(true);
ConsoleCaptureStdOut(false);
ConsoleCaptureStdOut(true);
ConsoleCaptureStdOut(false);
...

However, it produces unexpected results when function gets called with false argument first:

ConsoleCaptureStdOut(false); // UNEXPECTED: std::cout redirected to nullptr

Or when there are 2+ consecutive calls with true argument:

ConsoleCaptureStdOut(true);
ConsoleCaptureStdOut(true);
ConsoleCaptureStdOut(false); // UNEXPECTED: std::cout still points to console output

This PR fixes both edge cases.

[Piratux]

Fixed an additional edge case, where if user were to redirect std::cout, calling ConsoleCaptureStdOut(false) would redirect std::cout back to old location which may no longer be wanted:

ConsoleCaptureStdOut(true);
std::cout.rdbuf(nullptr);
ConsoleCaptureStdOut(false); // PROBABLY UNEXPECTED: std::cout could be redirected back to external console, even though std::cout was explicitly redirected in user's code