configure: fix vasprintf check under musl
authorRosen Penev <rosenp@gmail.com>
Sun, 15 Mar 2020 21:43:39 +0000 (14:43 -0700)
committerGitHub <noreply@github.com>
Sun, 15 Mar 2020 21:43:39 +0000 (14:43 -0700)
commit849ac4b24576f321b342114b07b2fd8af4f3f3dd
tree519de298723f06be22fc1db40e739c007f7cdaac
parentf75248a9d9554b668484b089713e7c2b0a154ad6
configure: fix vasprintf check under musl

It errors when passing NULL or 0. Passing an empty va_list works.
configure