rename local ticks

[Ted Unangst]

bad form, i think, to have a local variable shadow a global.

Index: kern_clock.c
===================================================================
RCS file: /cvs/src/sys/kern/kern_clock.c,v
retrieving revision 1.83
diff -u -p -r1.83 kern_clock.c
--- kern_clock.c        8 Oct 2013 03:50:07 -0000       1.83
+++ kern_clock.c        29 Nov 2013 21:48:40 -0000
@@ -213,7 +213,7 @@ int
 hzto(const struct timeval *tv)
 {
        struct timeval now;
-       unsigned long ticks;
+       unsigned long nticks;
        long sec, usec;
 
        /*
@@ -244,18 +244,18 @@ hzto(const struct timeval *tv)
                usec += 1000000;
        }
        if (sec < 0 || (sec == 0 && usec <= 0)) {
-               ticks = 0;
+               nticks = 0;
        } else if (sec <= LONG_MAX / 1000000)
-               ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
+               nticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
                    / tick + 1;
        else if (sec <= LONG_MAX / hz)
-               ticks = sec * hz
+               nticks = sec * hz
                    + ((unsigned long)usec + (tick - 1)) / tick + 1;
        else
-               ticks = LONG_MAX;
-       if (ticks > INT_MAX)
-               ticks = INT_MAX;
-       return ((int)ticks);
+               nticks = LONG_MAX;
+       if (nticks > INT_MAX)
+               nticks = INT_MAX;
+       return ((int)nticks);
 }
 
 /*
@@ -264,7 +264,7 @@ hzto(const struct timeval *tv)
 int
 tvtohz(const struct timeval *tv)
 {
-       unsigned long ticks;
+       unsigned long nticks;
        time_t sec;
        long usec;
 
@@ -291,18 +291,18 @@ tvtohz(const struct timeval *tv)
        sec = tv->tv_sec;
        usec = tv->tv_usec;
        if (sec < 0 || (sec == 0 && usec <= 0))
-               ticks = 0;
+               nticks = 0;
        else if (sec <= LONG_MAX / 1000000)
-               ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
+               nticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
                    / tick + 1;
        else if (sec <= LONG_MAX / hz)
-               ticks = sec * hz
+               nticks = sec * hz
                    + ((unsigned long)usec + (tick - 1)) / tick + 1;
        else
-               ticks = LONG_MAX;
-       if (ticks > INT_MAX)
-               ticks = INT_MAX;
-       return ((int)ticks);
+               nticks = LONG_MAX;
+       if (nticks > INT_MAX)
+               nticks = INT_MAX;
+       return ((int)nticks);
 }
 
 int