cppcheck: Disable "identical inner condition is always true" warning.

The second check occurs after unlocking and relocking a lock, so the
value of the variable may have been changed by another waiting
process.

mythtv/libs/libmythtv/channelutil.cpp

@@ -1182,6 +1182,7 @@ QString ChannelUtil::GetDefaultAuthority(uint chanid)
     {
         s_channelDefaultAuthorityMapLock.unlock();
         s_channelDefaultAuthorityMapLock.lockForWrite();
+        // cppcheck-suppress identicalInnerCondition
         if (s_runInit)
         {
             MSqlQuery query(MSqlQuery::InitCon());