configure.ac: rework/fix the NEEDS_RESOLV and NEEDS_LIBGEN tests

diff --git a/strbuf.c b/strbuf.c
index a88496030b7053a543173c299bd9f54b923db2ec..f03d11702b3f6212ca7305df60f2f9ea6ca49e35 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -260,7 +260,7 @@ size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
        res = fread(sb->buf + sb->len, 1, size, f);
        if (res > 0)
                strbuf_setlen(sb, sb->len + res);
-       else if (res < 0 && oldalloc == 0)
+       else if (oldalloc == 0)
                strbuf_release(sb);
        return res;
 }