From dc9eec29eb121d3d37c42c0c8947e53998a16dba Mon Sep 17 00:00:00 2001
From: "Hoa V. DINH" <dinh.viet.hoa@gmail.com>
Date: Sat, 16 Apr 2016 18:00:38 -0700
Subject: Don't crash if it couldn't be detected

---
 src/core/abstract/MCMessageHeader.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/core/abstract/MCMessageHeader.cpp b/src/core/abstract/MCMessageHeader.cpp
index e16f27af..d5a152f5 100644
--- a/src/core/abstract/MCMessageHeader.cpp
+++ b/src/core/abstract/MCMessageHeader.cpp
@@ -527,7 +527,9 @@ void MessageHeader::importIMFFields(struct mailimf_fields * fields)
             
             fieldValue = field->fld_data.fld_optional_field->fld_value;
             fieldValueStr = String::stringByDecodingMIMEHeaderValue(fieldValue);
-            setExtraHeader(fieldNameStr, fieldValueStr);
+            if (fieldValueStr != NULL) {
+                setExtraHeader(fieldNameStr, fieldValueStr);
+            }
         }
     }
 }
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