Fix Issues reported by PVS-Studio static analyzer

* vm.c (vm_set_main_stack): remove unnecessary check.  toplevel
  binding must be initialized.  [Bug #12611] (N1)
* win32/win32.c (w32_symlink): fix return type.  [Bug #12611] (N3)
* string.c (rb_str_split_m): simplify the condition.
  [Bug #12611](N4)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55729 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index c3e7bb3258..4f4c646b94 100644
--- a/vm.c
+++ b/vm.c
@@ -379,7 +379,7 @@ vm_set_main_stack(rb_thread_t *th, const rb_iseq_t *iseq)
     vm_set_eval_stack(th, iseq, 0, &env->block);
 
     /* save binding */
-    if (bind && iseq->body->local_size > 0) {
+    if (iseq->body->local_size > 0) {
 	bind->env = vm_make_env_object(th, th->cfp);
     }
 }