rX_SysCreateSignal may return an already initialized signal (if that signal has been used before and has been deleted)

rX_SysCreateSignal always delivers one of 64 internal signals. When deleting a signal via rX_SysDeleteSignal the signal is returned to a free list, with it's current state being saved. When this signal is now returned on rX_SysCreateSignal, the old signal state is now used on this newly created signal