Fixed warnings due to uninitialized instance variable

[nitinsingh25]

I have fixed following two warnings:

1. lib/apipie/param_description.rb:103: warning: instance variable @from_concern not initialized
2. lib/apipie/dsl_definition.rb:349: warning: instance variable @_current_param_group not initialized

[PanosCodes]

I think for this case we can leave it as is

Suggested change

	method_description.from_concern? || (defined?(@from_concern) && @from_concern)
	method_description.from_concern? || @from_concern

and update lines

apipie-rails/lib/apipie/param_description.rb

Lines 56 to 58 in b0bc6d6

	if @options[:param_group]
	@from_concern = @options[:param_group][:from_concern]
	end

from

if @options[:param_group]
  @from_concern = @options[:param_group][:from_concern]
end

to

@from_concern = @options.dig(:param_group, :from_concern)

[mathieujobin]

I don't think adding a check on usage is the right way. just making sure it gets initialize on object creation is probably more desirable

Thanks for taking a stab at it though.

What do you think of #838 ?

[nitinsingh25]

I don't think adding a check on usage is the right way. just making sure it gets initialize on object creation is probably more desirable

Thanks for taking a stab at it though.

What do you think of #838 ?

Yup, changes of #838 seems more appropriate. Let me test my changes with #838.