Making getBridge() static triggered a build error with some gcc versions:

error: 'strncpy' output may be truncated copying 15 bytes from a string of
length 255 [-Werror=stringop-truncation]

Fix that by using a buffer with 256 bytes instead.

Fixes: 6d0ec053907794 ("tools: split libxenstat into new tools/libs/stat directory")
Signed-off-by: Juergen Gross <jgross@suse.com>
---
 tools/libs/stat/xenstat_linux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/libs/stat/xenstat_linux.c b/tools/libs/stat/xenstat_linux.c
index 793263f2b6..4fee63e36d 100644
--- a/tools/libs/stat/xenstat_linux.c
+++ b/tools/libs/stat/xenstat_linux.c
@@ -264,7 +264,7 @@ int xenstat_collect_networks(xenstat_node * node)
 {
 	/* Helper variables for parseNetDevLine() function defined above */
 	int i;
-	char line[512] = { 0 }, iface[16] = { 0 }, devBridge[16] = { 0 }, devNoBridge[17] = { 0 };
+	char line[512] = { 0 }, iface[16] = { 0 }, devBridge[256] = { 0 }, devNoBridge[257] = { 0 };
 	unsigned long long rxBytes, rxPackets, rxErrs, rxDrops, txBytes, txPackets, txErrs, txDrops;
 
 	struct priv_data *priv = get_priv_data(node->handle);
-- 
2.26.2