Fix types-related warnings based on clang diagnostics

1. Fix some places where unsigned value compared < 0
2. Fix obsolete %Z specifier to more portable %z
3. Some erroneous types substitution
4. nl_msec2str() - 64-bit msec is now properly used,

Only safe changes. I mean int <--> uint32_t and signed/unsigned fixes.
Some functinos require size_t argument instead of int, but changes of
signatures of that functions is terrible thing.

Also, I do not pretend for a full list of fixes.
Just to shut up clang -Wall -Wextra

One more thing. ifindex. I don't change that because changes will
be too big for simple fix.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/route/qdisc.c b/lib/route/qdisc.c
index e5a8aa0..3d618c6 100644
--- a/lib/route/qdisc.c
+++ b/lib/route/qdisc.c
@@ -275,7 +275,7 @@ int rtnl_qdisc_build_delete_request(struct rtnl_qdisc *qdisc,
 {
 	struct nl_msg *msg;
 	struct tcmsg tchdr;
-	int required = TCA_ATTR_IFINDEX | TCA_ATTR_PARENT;
+	uint32_t required = TCA_ATTR_IFINDEX | TCA_ATTR_PARENT;
 
 	if ((qdisc->ce_mask & required) != required) {
 		APPBUG("ifindex and parent must be specified");