fix logging debug

Author: chillaq

lib/splitclient-rb/engine/matchers/rule_based_segment_matcher.rb

@@ -40,7 +40,7 @@ def match?(args)
         break if matched
       end
 
-      @logger.debug("[InRuleSegmentMatcher] #{@segment_name} is in rule based segment -> #{matched}")
+      @config.logger.debug("[InRuleSegmentMatcher] #{@segment_name} is in rule based segment -> #{matched}") if @config.debug_enabled
       matched
     end