Fix undefined method error

[FixRM rapid7#8342]

Author: wchen-r7

modules/auxiliary/scanner/http/axis_local_file_include.rb

@@ -84,7 +84,12 @@ def get_credentials(uri)
 
 			print_status("#{target_url} - Apache Axis - Dumping administrative credentials")
 
-			if (res and res.code == 200)
+			if res.nil?
+				print_error("Connection timed out")
+				return
+			end
+
+			if (res.code == 200)
 				if res.body.to_s.match(/axisconfig/)
 
 					res.body.scan(/parameter\sname=\"userName\">([^\s]+)</)