Debugging version of previous commit (40fc4ae), to wrap &blocks only when there is a Func check. (bug 278)

Author: md-work

lib/contracts/call_with.rb

@@ -81,8 +81,19 @@ def call_with_inner(returns, this, *args, &blk)
                  method.call(*args, &blk)
                else
                  # original method name reference
-                 blk = lambda { |*params| blk.call(*params) } if blk && blk.is_a?(Contract)
-                 method.send_to(this, *args, &blk)
+                 target_block = nil
+                 blk_is_contract = false
+                 if blk
+                   if blk.is_a?(Contract) # rubocop:disable Style/IfUnlessModifier
+                     blk_is_contract = true
+                   end
+                 end
+                 if blk_is_contract # rubocop:disable Style/ConditionalAssignment
+                   target_block = lambda { |*params| blk.call(*params) }
+                 else
+                   target_block = blk
+                 end
+                 method.send_to(this, *args, &target_block)
                end
 
       unless @ret_validator[result]