Being able to recognize that "par" is reliably initialized on the 1st
loop iteration requires not overly old compilers.
Fixes: 7809132b1a1d ("tools/xen-9pfsd: add 9pfs response generation support")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/tools/9pfsd/io.c
+++ b/tools/9pfsd/io.c
@@ -196,7 +196,7 @@ static void fill_buffer_at(void **data,
static void vfill_buffer_at(void **data, const char *fmt, va_list ap)
{
const char *f;
- const void *par;
+ const void *par = NULL; /* old gcc */
const char *str_val;
const struct p9_qid *qid;
const struct p9_stat *stat;