os_lib_model_generation does not assign SWH type correctly

[eringold]

openstudio-extension-gem/lib/openstudio/extension/core/os_lib_model_generation.rb

Lines 2958 to 2969 in cd4d9f1

	# Infer the SWH type
	if args['swh_src'] == 'Inferred'
	if args['htg_src'] == 'NaturalGas' || args['htg_src'] == 'DistrictHeating'
	args['swh_src'] = 'NaturalGas' # If building has gas service, probably uses natural gas for SWH
	elsif args['htg_src'] == 'Electricity'
	args['swh_src'] == 'Electricity' # If building is doing space heating with electricity, probably used for SWH
	elsif args['htg_src'] == 'DistrictAmbient'
	args['swh_src'] == 'HeatPump' # If building has district ambient loop, it is fancy and probably uses HPs for SWH
	else
	args['swh_src'] = nil # Use inferences built into OpenStudio Standards for each building and space type
	end
	end

Equality operator == used instead of assignment =:
Line 2963 should be
args['swh_src'] = 'Electricity' # If building is doing space heating with electricity, probably used for SWH
Line 2965 should be
args['swh_src'] = 'HeatPump' # If building has district ambient loop, it is fancy and probably uses HPs for SWH