vm_trace.c: remove duplicate flag

* vm_trace.c (rb_suppress_tracing): remove duplicate flag
  `tracing`, which equals to `ec->trace_arg != NULL`.  and that
  `ec->trace_arg` points `dummy_trace_arg` means it was NULL at
  the beginning.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60962 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 5 deletions

diff --git a/vm_trace.c b/vm_trace.c
index 405f6dd34e..39d2a062db 100644
--- a/vm_trace.c
+++ b/vm_trace.c
@@ -381,14 +381,13 @@ rb_suppress_tracing(VALUE (*func)(VALUE), VALUE arg)
     rb_execution_context_t *ec = GET_EC();
     rb_vm_t *vm = rb_ec_vm_ptr(ec);
     enum ruby_tag_type state;
-    const int volatile tracing = ec->trace_arg ? 1 : 0;
     rb_trace_arg_t dummy_trace_arg;
     dummy_trace_arg.event = 0;
 
-    if (!tracing) {
+    if (!ec->trace_arg) {
 	vm->trace_running++;
+	ec->trace_arg = &dummy_trace_arg;
     }
-    if (!ec->trace_arg) ec->trace_arg = &dummy_trace_arg;
 
     raised = rb_ec_reset_raised(ec);
 
@@ -402,8 +401,8 @@ rb_suppress_tracing(VALUE (*func)(VALUE), VALUE arg)
 	rb_ec_reset_raised(ec);
     }
 
-    if (ec->trace_arg == &dummy_trace_arg) ec->trace_arg = NULL;
-    if (!tracing) {
+    if (ec->trace_arg == &dummy_trace_arg) {
+	ec->trace_arg = NULL;
 	vm->trace_running--;
     }