[slf4j-dev] [qos-ch/slf4j] acc915: fix SLF4J-463

[Ceki Gulcu]

  Branch: refs/heads/master
  Home:   https://github.com/qos-ch/slf4j
  Commit: acc915075b4932ebf99c2febf2fb60b4144200aa
      https://github.com/qos-ch/slf4j/commit/acc915075b4932ebf99c2febf2fb60b4144200aa
  Author: Ceki Gulcu <ceki at qos.ch>
  Date:   2019-08-09 (Fri, 09 Aug 2019)

  Changed paths:
    M slf4j-api/src/main/java/org/slf4j/LoggerFactory.java
    M slf4j-api/src/main/java/org/slf4j/MarkerFactory.java
    M slf4j-api/src/main/java/org/slf4j/spi/SLF4JServiceProvider.java
    A slf4j-simple/src/main/java/org/slf4j/simple/DoubleInitializationPitfallTest.java
    M slf4j-site/src/site/pages/news.html

  Log Message:
  -----------
  fix SLF4J-463