Remove vobjcnt field of Proc

kernel/proc/proc.c

@@ -180,7 +180,7 @@ void proc_reaper(void) {
     Proc *zombie = head;
     LL_REMOVE(PROCS.procs, zombie);
 
-    for (size_t i = 0; i < zombie->vobjcnt; i++) {
+    for (size_t i = 0; i < PROC_VFSHANDLES_MAX; i++) {
       if (zombie->vobjs[i] != NULL) {
         vfs_close(zombie->vobjs[i]);
         zombie->vobjs[i] = NULL;

kernel/proc/proc.h

@@ -55,7 +55,6 @@ typedef struct Proc {
   VasRange *vas;
 
   VfsObj *vobjs[PROC_VFSHANDLES_MAX];
-  uint64_t vobjcnt;
 
   IpcPipe *pipes[PROC_PIPEHANDLES_MAX];
   SpinLock pipes_spinlock;

kernel/syscall/fs.c

@@ -38,17 +38,15 @@ int32_t SYSCALL2(sys_fs_openf, opath1, oflags1) {
   Proc *proc = PROCS.current;
   spinlock_release(&PROCS.spinlock);
 
-  if (proc->vobjcnt < PROC_VFSHANDLES_MAX) {
   for (size_t i = 0; i < PROC_VFSHANDLES_MAX; i++) {
     if (proc->vobjs[i] == NULL) {
       proc->vobjs[i] = vobj;
       ret = i;
-        break;
+      goto done;
     }
   }
-  } else {
+
   ret = E_NOMEMORY;
-  }
 
 done:
   return ret;