FIXED: Fix potential bug

diff --git a/Sources/libMultiMarkdown/mmd.c b/Sources/libMultiMarkdown/mmd.c
index ce5c6b7dab0e950afb3f95420d06928da84e58af..b27c7a6479cbf3a23c9a8b622284c2bb04a6211d 100644 (file)
--- a/Sources/libMultiMarkdown/mmd.c
+++ b/Sources/libMultiMarkdown/mmd.c
@@ -2538,7 +2538,11 @@ void mmd_engine_update_metavalue_for_key(mmd_engine * e, const char * key, const
 
        DString * temp = d_string_new(key);
        d_string_append(temp, ":\t");
-       d_string_append(temp, value);
+
+       if (value) {
+               d_string_append(temp, value);
+       }
+
        d_string_append_c(temp, '\n');
 
        if (start != -1) {