Fix parsing of superclasses in CRuby docs

Fixes #1079

Author: lsegal

lib/yard/handlers/c/class_handler.rb

@@ -21,7 +21,7 @@ class YARD::Handlers::C::ClassHandler < YARD::Handlers::C::Base
       handle_class(var_name, class_name, parent)
     end
     statement.source.scan(MATCH2) do |var_name, in_module, class_name, parent|
-      handle_class(var_name, class_name, parent, in_module)
+      handle_class(var_name, class_name, parent.strip, in_module)
     end
   end
 end

spec/handlers/c/class_handler_spec.rb

@@ -10,9 +10,10 @@
   it "registers classes under namespaces" do
     parse_init <<-EOF
       cBar = rb_define_class("Bar", rb_cObject);
-      cFoo = rb_define_class_under(cBar, "Foo", rb_cObject);
+      cFoo = rb_define_class_under( cBar, "Foo", rb_cBaz );
     EOF
     expect(Registry.at('Bar::Foo').type).to eq :class
+    expect(Registry.at('Bar::Foo').superclass.path).to eq 'Baz'
   end
 
   it "remembers symbol defined with class" do