Remove unneeded mutex lock, update change log

Author: andibacher

ChangeLog.md

@@ -5,14 +5,16 @@ All notable changes to this project will be documented in this file.
 ## [v1.6.0] - ??
 ### Improvements
 
+- if console is blocked by debugger use OutputDebugString (win)
 - Support for Qt6
 - Minimum required Qt version is 5.12
 - Add case sensitivity option in Stringmatchfilter
 - cmake: replace BUILD_STATIC_LOG4CXX_LIB with standard BUILD_SHARED_LIBS
 
 ### Fixed
+- TTCCLayout crash fix (#69)
 - Fixes for Qt6.7
-- Replace deprecated Qt 5.15 stuff
+- Replace deprecated Qt 5.15 stu
 
 ## [v1.5.1] - 14.02.2020
 ### Improvements

src/log4qt/helpers/appenderattachable.cpp

@@ -80,7 +80,6 @@ void AppenderAttachable::removeAppender(const AppenderSharedPtr &appender)
 
 void AppenderAttachable::removeAppender(const QString &name)
 {
-    QWriteLocker locker(&mAppenderGuard);
     AppenderSharedPtr pAppender = appender(name);
     if (pAppender)
         removeAppender(pAppender);