eal/linux: fix uninitialized data valgrind warning

[ upstream commit e0ab802 ]

Valgrind reports that eal interrupt thread is calling epoll_ctl
with uninitialized data.
This is a false positive, because the kernel is not going to care about
the unused bits in the union but trivial to fix by initializing it.

Fixes: af75078 ("first public release")

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: David Marchand <david.marchand@redhat.com>

lib/librte_eal/linuxapp/eal/eal_interrupts.c

@@ -964,7 +964,7 @@ eal_intr_handle_interrupts(int pfd, unsigned totalfds)
 static __attribute__((noreturn)) void *
 eal_intr_thread_main(__rte_unused void *arg)
 {
-	struct epoll_event ev;
+	struct epoll_event ev = { };
 
 	/* host thread, never break out */
 	for (;;) {