use conditional assignment

patch bump

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    obsws (0.4.0)
+    obsws (0.4.1)
       waitutil (~> 0.2.1)
       websocket-driver (~> 0.7.5)
 

lib/obsws/logger.rb

@@ -3,7 +3,7 @@ require "logger"
 module OBSWS
   module Logging
     def logger
-      @logger = Logger.new($stdout, level: ENV.fetch("OBSWS_LOG_LEVEL", "WARN"))
+      @logger ||= Logger.new($stdout, level: ENV.fetch("OBSWS_LOG_LEVEL", "WARN"))
       @logger.progname = instance_of?(::Module) ? name : self.class.name
       @logger
     end

lib/obsws/version.rb

@@ -11,7 +11,7 @@ module OBSWS
     end
 
     def patch
-      1
+      2
     end
 
     def to_a