chore: remove unnecessary bitwise arithmetic

src/core/main.c

@@ -1253,8 +1253,6 @@ static void bump_file_max_and_nr_open(void) {
 #endif
 
 #if BUMP_PROC_SYS_FS_NR_OPEN
- unsigned v = INT_MAX;
-
  /* cf. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/fs/file.c?h=v6.8#n27
  * for the progeny of the below value for `sysctl_nr_open_max`. Note
  * that the below logic was first introduced in `git` commit
@@ -1269,7 +1267,7 @@ static void bump_file_max_and_nr_open(void) {
  for (;;) {
  unsigned k;
 
- v &= sysctl_nr_open_max;
+ unsigned v &= sysctl_nr_open_max;
 
  if (v < 1024) {
  log_warning("Can't bump fs.nr_open, value too small.");