Using calloc() will keep the pointer wild

[hasantouma]

I came across this issue when converting Icecast in the function thread_create_c() in the src/thread/thread.c file.

When calloc() is used to allocate memory the tool will make the assigned pointer a wild pointer, even if it should be a _Ptr

The following is a small example that illustrates the issue:
bar.c: (with malloc())

#include <stdlib_checked.h>

int main() {

  char *ptr1 = NULL;

  ptr1 = (char *) malloc(sizeof(char));

  return 0;
}

After the conversion, it will produce:
bar.checked.c:

#include <stdlib_checked.h>

int main() {

  _Ptr<char> ptr1 =  NULL;

  ptr1 = (char *) malloc(sizeof(char));

  return 0;
}

Now with calloc()
bar.c: (with calloc())

#include <stdlib_checked.h>

int main() {

  char *ptr1 = NULL;

  ptr1 = (char *) calloc(1, sizeof(char));

  return 0;
}

The porting tool will not make any changes to this file.

Expected output:

#include <stdlib_checked.h>

int main() {

  _Ptr<char> ptr1 =  NULL;

  ptr1 = (char *) calloc(1, sizeof(char));

  return 0;
}

[Machiry]

Fixed.