an typo error for the new CVE patch

[Zhongyunde]

Hi，Jeff Johnston:



    I find the patch, which is used to fix the accesses NULL ptr. And the assert info is Balloc succeeded when alloc memory fail, which seems an typo error.

[cid:image001.png@01D61A68.C927FB90]
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 8098 bytes
Desc: image001.png
URL: <https://sourceware.org/pipermail/newlib/attachments/20200424/6bfd45cc/attachment.png>