dash: BasicCMParser: Avoid potential crash when inheriting mimeType

diff --git a/modules/stream_filter/dash/mpd/BasicCMParser.cpp b/modules/stream_filter/dash/mpd/BasicCMParser.cpp
index 968d107ce447f98b127d51017efbfd3315ac860d..047e4e21d0a840313137fc79008f7f302b442d5f 100644 (file)
--- a/modules/stream_filter/dash/mpd/BasicCMParser.cpp
+++ b/modules/stream_filter/dash/mpd/BasicCMParser.cpp
@@ -567,7 +567,8 @@ bool    BasicCMParser::parseCommonAttributesElements( Node *node, CommonAttribut
             return false;
         }
     }
-    common->setMimeType( it->second );
+    else
+        common->setMimeType( it->second );
     //Everything else is optionnal.
     it = attr.find( "width" );
     if ( it != attr.end() )