[PATCH] proc: use "unsigned int" for /proc/*/stack

[Alexey Dobriyan <adobriyan@gmail.com>]

struct stack_trace::nr_entries is defined as "unsigned int" (YAY!)
so the iterator should be unsigned as well.

It saves 1 byte of code or something like that.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 fs/proc/base.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -430,7 +430,6 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
 	struct stack_trace trace;
 	unsigned long *entries;
 	int err;
-	int i;
 
 	entries = kmalloc(MAX_STACK_TRACE_DEPTH * sizeof(*entries), GFP_KERNEL);
 	if (!entries)
@@ -443,6 +442,8 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
 
 	err = lock_trace(task);
 	if (!err) {
+		unsigned int i;
+
 		save_stack_trace_tsk(task, &trace);
 
 		for (i = 0; i < trace.nr_entries; i++) {