"Call to 'realloc' has an allocation size of 0 bytes" - static analyzer warning.

Feel free to close this.. But my static analyzer popped up with this "observation". Not quite sure if it is erroneous, or not.. so thought I'd just put it up.

> linenoise.c: 447:17: Call to 'realloc' has an allocation size of 0 bytes
> linenoise.c: 751:11: Entering loop body
> linenoise.c: 757:13: Assuming 'nread' is > 0
> linenoise.c: 762:13: Assuming 'c' is not equal to 9
> linenoise.c: 751:5: Looping back to the head of the loop
> linenoise.c: 751:11: Entering loop body
> linenoise.c: 757:13: Assuming 'nread' is > 0
> linenoise.c: 762:13: Assuming 'c' is not equal to 9
> linenoise.c: 751:5: Looping back to the head of the loop
> linenoise.c: 751:11: Entering loop body
> linenoise.c: 757:13: Assuming 'nread' is > 0
> linenoise.c: 762:13: Assuming 'c' is not equal to 9
> linenoise.c: 751:5: Looping back to the head of the loop
> linenoise.c: 751:11: Entering loop body
> linenoise.c: 757:13: Assuming 'nread' is > 0
> linenoise.c: 762:13: Assuming 'c' is not equal to 9
> linenoise.c: 890:13: Calling 'refreshLine'
> linenoise.c: 584:1: Entered call from '> linenoiseEdit'
> linenoise.c: 585:9: Assuming 'mlmode' is not equal to 0
> linenoise.c: 586:9: Calling 'refreshMultiLine'
> linenoise.c: 502:1: Entered call from 'refreshLine'
> linenoise.c: 526:17: Loop body executed 0 times
> linenoise.c: 539:5: Calling 'abAppend'
> linenoise.c: 446:1: Entered call from 'refreshMultiLine'
> linenoise.c: 447:17: Call to 'realloc' has an allocation size of 0 bytes