fix valgrind ioctl warning.

Initialize local variable to avoid syscall ioctl warning.

Change-Id: Ibad5b86cd799f147c71f182d654e61318e2ac15e
Origin-Change-Id: Iedf5b128ae1743f633d2821ac3e402942ad6642b
Signed-off-by: Jin Wei <wei.a.jin@intel.com>
Signed-off-by: Jian Luo <jian.luo@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 62797
diff --git a/libcutils/ashmem-dev.c b/libcutils/ashmem-dev.c
index 8b71f87..3089a94 100644
--- a/libcutils/ashmem-dev.c
+++ b/libcutils/ashmem-dev.c
@@ -48,7 +48,7 @@
 		return fd;
 
 	if (name) {
-		char buf[ASHMEM_NAME_LEN];
+		char buf[ASHMEM_NAME_LEN] = {0};
 
 		strlcpy(buf, name, sizeof(buf));
 		ret = ioctl(fd, ASHMEM_SET_NAME, buf);