Leak of Malloc 16 Bytes in C / Objective-C - objective-c

Question

When I profile my code with Instruments, it shows a leak of Malloc 16 bytes from this function (below), but I never used malloc in this function. Is there a place in this function where I should free some resources?
It may look like a lot of code, but there is really only the variables counts and counts2 as possible offenders I think.
+ (int) trimArray: (NSMutableArray*) source above: (short) max andMin: (short) min
{
int counts[6][7];
int counts2[6][7];
for (int i=0;i<=5;i++)
{
for (int ii=0;ii<7;ii++)
{
counts[i][ii] = 0;
counts2[i][ii] = 0;
}
}
int capacity = (int)[source count]/max;
if (capacity <2)
capacity = 2;
NSMutableArray *itemsToRemove = [[NSMutableArray alloc] initWithCapacity:capacity];
int week,dow,count1,count2;
EntryTimeItem *item;
NSEnumerator *e;
e = [source objectEnumerator];
while (item = [e nextObject])
{
week = item.week_number;
dow = item.day_of_the_week;
if (week >=0 && week <6 && dow >=0 && dow <7)
{
counts[week][dow]++;
}
}
e = [source objectEnumerator];
while (item = [e nextObject])
{
week = item.week_number;
dow = item.day_of_the_week;
if (week >= 0 && week < 6 && dow >= 0 && dow < 7)
{
count2 = counts2[week][dow];
count1 = counts[week][dow];
if (count1 > max)
{
if (!count2)
{
item.time = -1;
item.align = NSCenterTextAlignment;
item.label = [NSString stringWithFormat:#"%d entries",count1];
}
else {
// remove this item if it is after the first item which
// was converted to a placeholder for all the items
[itemsToRemove addObject:item];
}
}
counts2[week][dow]++;
}
}
e = [itemsToRemove objectEnumerator];
while (item = [e nextObject])
{
[source removeObject:item];
}
int count_extra_events = 0;
for (int i=0;i<7;i++)
{
int count_events2 = 0;
for (int ii = 0; ii < 6; ii++)
{
int count3 = counts[ii][i];
if (count3 < max && count3 > min)
count_events2 += count3 - min;
}
// store the greatest value found sofar
if (count_events2 > count_extra_events)
{
count_extra_events = count_events2;
}
}
return count_extra_events;
}

Answer 1

The problem appears to stem from the line:
NSMutableArray *itemsToRemove = [[NSMutableArray alloc] initWithCapacity:capacity];
Please check if there is anyway, the resource itemsToRemove can be freed.