dead assignements in usr.bin/systat

[Sebastian Benoit]

an earlier commit today prompted florian@ to run clang, these fixes are a
result of issues found.

ok?

[PATCH 1/4] remove unused variable cur. code probably c&p from
print_bar_title().

diff --git usr.bin/systat/engine.c usr.bin/systat/engine.c
index 51c0b7f..bc9f6ef 100644
--- usr.bin/systat/engine.c
+++ usr.bin/systat/engine.c
@@ -361,7 +361,7 @@ print_bar_title(field_def *fld)
 void
 print_fld_bar(field_def *fld, int value)
 {
-       int i, tw, val, cur;
+       int i, tw, val;
 
        if (fld->width < 1)
                return;
@@ -370,7 +370,7 @@ print_fld_bar(field_def *fld, int value)
        tw = fld->arg / 2;
 
        tb_start();
-       cur = 0;
+
        for(i = 0; i < fld->width; i++) {
                tw += fld->arg;
 
[PATCH 2/4] remove useless assignement to variable change.

diff --git usr.bin/systat/engine.c usr.bin/systat/engine.c
index bc9f6ef..faefaa0 100644
--- usr.bin/systat/engine.c
+++ usr.bin/systat/engine.c
@@ -488,7 +488,6 @@ field_setup(void)
                        width -= fwid;
        }
 
-       change = 0;
        while (width > 0) {
                change = 0;
                for (fp = curr_view->view; *fp != NULL; fp++) {

[PATCH 3/4] garbage collect unused variable tm

diff --git usr.bin/systat/cpu.c usr.bin/systat/cpu.c
index 520bb93..8bb5be1 100644
--- usr.bin/systat/cpu.c
+++ usr.bin/systat/cpu.c
@@ -246,12 +246,10 @@ initcpu(void)
 void
 print_cpu(void)
 {
-       time_t          tm;
        int             cur = 0, c, i;
        int             end = dispstart + maxprint;
        int64_t         *states;
        double          value[CPUSTATES];
-       tm = time(NULL);
 
        if (end > num_disp)
                end = num_disp;

[PATCH 4/4] make sure debug will be initialized, choose "unknown"
 because pfctl loglevel_to_string() uses "unknown" as well.

diff --git usr.bin/systat/pf.c usr.bin/systat/pf.c
index 0833618..58c0d69 100644
--- usr.bin/systat/pf.c
+++ usr.bin/systat/pf.c
@@ -259,6 +259,9 @@ print_pf(void)
        case LOG_DEBUG:
                debug = "debug";
                break;
+       default:
+               debug = "unknown";
+               break;
        }
        ADD_LINE_S("pf", "Debug", debug);