From 6736f3d24b6c83389326207b704211696b0e8e2c Mon Sep 17 00:00:00 2001
From: Matias <matias@dimension10.com>
Date: Thu, 9 May 2019 11:19:05 +0200
Subject: [PATCH] Don't call PutString with an empty string. Both
 DumpChildrenAscii and EndAscii can return without modifyting the string, so
 we need to check the string before calling PutString. This used to cause a
 crash.

---
 code/FBXExportNode.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/code/FBXExportNode.cpp b/code/FBXExportNode.cpp
index e5215466a..e90a50e67 100644
--- a/code/FBXExportNode.cpp
+++ b/code/FBXExportNode.cpp
@@ -252,7 +252,8 @@ void FBX::Node::DumpChildren(
     } else {
         std::ostringstream ss;
         DumpChildrenAscii(ss, indent);
-        s.PutString(ss.str());
+        if (ss.tellp() > 0)
+            s.PutString(ss.str());
     }
 }
 
@@ -266,7 +267,8 @@ void FBX::Node::End(
     } else {
         std::ostringstream ss;
         EndAscii(ss, indent, has_children);
-        s.PutString(ss.str());
+        if (ss.tellp() > 0)
+            s.PutString(ss.str());
     }
 }