6b4c596b "Fix memory leak for BASIC sub (as well
as void function)," from just looking at the few lines of code in isolation, and
their revision history, looked like a plausible and effective approach to fix
the leaks reported by CppunitTest_basci_vba when run under lsan.

However, tdf#92446 indicates that that innocent-looking change had rather dire
consequences.  So revert it and leave a fix for the memory leak to somebody who
actually understands all this code.

Change-Id: Ic81b1c14a1cfb07c6ec4415cc26b2f826adbc8ca