From 6e57ab960663a46fda931c2b095720710f932ad5 Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Wed, 15 Aug 2012 22:09:47 +0000
Subject: [PATCH] Fix fatal on 0-length print to XML

---
 output.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/output.cc b/output.cc
index cc24a61b4..659d49163 100644
--- a/output.cc
+++ b/output.cc
@@ -990,7 +990,7 @@ void log_vwrite(int logt, const char *fmt, va_list ap) {
           l >>= 1;
         }
         assert(fileidx < LOG_NUM_FILES);
-        if (o.logfd[fileidx]) {
+        if (o.logfd[fileidx] && len) {
           if ((logtype & (LOG_SKID|LOG_SKID_NOXLT)) && !skid_noxlate)
             skid_output(writebuf);