[mod_cgi] eliminate warning when compiled -Os
@@ -546,7 +546,7 @@ static ssize_t cgi_write_file_chunk_mmap(server *srv, connection *con, int fd, c
off_t offset, toSend, file_end;
ssize_t r;
size_t mmap_offset, mmap_avail;
- char *data;
+ char *data = NULL;
force_assert(NULL != c);
force_assert(FILE_CHUNK == c->type);
