Fixed bug in log length calculation (null character was included) [thanks Klaus Darilion]

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@767 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/src/pj/log.c b/pjlib/src/pj/log.c
index d1bef5c..5688e9f 100644
--- a/pjlib/src/pj/log.c
+++ b/pjlib/src/pj/log.c
@@ -151,7 +151,7 @@
 	if (log_decor & PJ_LOG_HAS_NEWLINE) {
 	    log_buffer[len++] = '\n';
 	}
-	log_buffer[len++] = '\0';
+	log_buffer[len] = '\0';
     } else {
 	len = sizeof(log_buffer)-1;
 	if (log_decor & PJ_LOG_HAS_CR) {