merge revision(s) 62115: [Backport #14421]

	proc: fix super_method segfault after bind

	* proc.c: handle undefined iclass
	  [ruby-core:85231] [Bug #14421]

	From: Eric Wong <e@80x24.org>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62866 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/proc.c b/proc.c
index 8da388375b..898b7b4929 100644
--- a/proc.c
+++ b/proc.c
@@ -2712,6 +2712,7 @@ method_super_method(VALUE method)
 
     TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
     iclass = data->iclass;
+    if (!iclass) return Qnil;
     super_class = RCLASS_SUPER(RCLASS_ORIGIN(iclass));
     mid = data->me->called_id;
     if (!super_class) return Qnil;