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

[mralexgray]

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