use `GET_VM()` directly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60540 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 5 deletions

diff --git a/vm_backtrace.c b/vm_backtrace.c
index a0815f1d6c..a10f848daf 100644
--- a/vm_backtrace.c
+++ b/vm_backtrace.c
@@ -331,8 +331,7 @@ location_to_str(rb_backtrace_location_t *loc)
 	    lineno = location_lineno(loc->body.cfunc.prev_loc);
 	}
 	else {
-	    rb_thread_t *th = GET_THREAD();
-	    file = th->vm->progname;
+	    file = GET_VM()->progname;
 	    lineno = INT2FIX(0);
 	}
 	name = rb_id2str(loc->body.cfunc.mid);
@@ -674,9 +673,7 @@ static void
 oldbt_init(void *ptr, size_t dmy)
 {
     struct oldbt_arg *arg = (struct oldbt_arg *)ptr;
-    rb_thread_t *th = GET_THREAD();
-
-    arg->filename = th->vm->progname;
+    arg->filename = GET_VM()->progname;
     arg->lineno = 0;
 }