[PATCH v2 4/4] libxenstat: qmp_read fix and cleanup

[Wei Liu <wei.liu2@citrix.com>]

The second argument of poll(2) is the number of file descriptors. POLLIN
is defined as 1 so it happens to work. Also reduce the size of array to
one as there is only one file descriptor.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Charles Arnold <carnold@suse.com>
---
 tools/xenstat/libxenstat/src/xenstat_qmp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/xenstat/libxenstat/src/xenstat_qmp.c b/tools/xenstat/libxenstat/src/xenstat_qmp.c
index 8d91fef..5e261af 100644
--- a/tools/xenstat/libxenstat/src/xenstat_qmp.c
+++ b/tools/xenstat/libxenstat/src/xenstat_qmp.c
@@ -289,13 +289,13 @@ static size_t qmp_write(int qfd, char *cmd, size_t cmd_len)
 static int qmp_read(int qfd, unsigned char **qstats)
 {
 	unsigned char buf[1024], *ptr;
-	struct pollfd pfd[2];
+	struct pollfd pfd[1];
 	int n, qsize = 0;
 
 	*qstats = NULL;
 	pfd[0].fd = qfd;
 	pfd[0].events = POLLIN;
-	while ((n = poll(pfd, POLLIN, 10)) > 0) {
+	while ((n = poll(pfd, 1, 10)) > 0) {
 		if (pfd[0].revents & POLLIN) {
 			if ((n = read(qfd, buf, sizeof(buf))) < 0) {
 				free(*qstats);
-- 
1.9.1