Enumeration Correction in C-Interface

Following issue #144.
@zdne sure, but I'm not sure about about the blueprint, do you think I can use the same one as [this](https://github.com/alikh31/snowcrash/blob/alikh31/issue%23144/test/test-csnowcrash.cc#L88) test?


		FORMAT: 1A

		# /resource
		## GET

		 + request A

		 A

		 + response 200

		 200-A

		 + request B

		 B

		 + response 200

		 200-B