use thread ID instead of process ID in logger messages (issue #5349)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6726 65c4cc65-6c06-0410-ace0-fbb531ad65f3

logger.c

@@ -65,13 +65,17 @@ static int syslog_level_map[] = {
 
 #define MAX_MSG_QUEUE 200
 
-#if defined(__linux__) && defined(__NR_gettid)
+#if defined(__linux__) && !defined(__NR_gettid)
 #include <asm/unistd.h>
+#endif
+
+#if defined(__linux__) && defined(__NR_gettid)
 #define GETTID() syscall(__NR_gettid)
 #else
 #define GETTID() getpid()
 #endif
 
+
 static char dateformat[256] = "%b %e %T";		/* Original Asterisk Format */
 
 AST_MUTEX_DEFINE_STATIC(msglist_lock);