RexxDeregisterExit - Returns

The RexxDeregisterExit return values are:

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 0      RXEXIT_OK                  Function completed successfully.
 ──────────────────────────────────────────────────────────────────────
 30     RXEXIT_NOTREG              Registration was unsuccessful due to
                                   duplicate handler and dynalink names
                                   (RexxRegisterExitExe or
                                   RexxRegisterExitDll); the exit
                                   handler is not registered (other
                                   REXX exit handler functions).
 ──────────────────────────────────────────────────────────────────────
 40     RXEXIT_NOCANDROP           The exit handler has been registered
                                   as "not droppable."
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