Empty Strings saved as NULL

[James Powell]

Change to how strings bound has caused empty ones to be saved as NULL. Likely becayuse an empty U8Array is bound to a zero pointer, while a C-String is a non-null pointer to a 1-byte allocation (for a single 00 byte).

Add a case, so that empty strings use the C-string way of calling teh dll function.

[James Powell]

Fix #30: Empty Strings saved as NULL

→ <<cset d74bd5dc36fc>>