Crash on space in score part id

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.1 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
<score-partwise version="3.1">
 <part-list>
  <score-part id="P18 ">
   <part-name>Bass</part-name>
   <score-instrument id="P18-I1">
    <instrument-name>Bass</instrument-name>
   </score-instrument>
  </score-part>
 </part-list>
 <part id="P18">
  <measure number="1">
  </measure>
 </part>
</score-partwise>

diff --git a/mscore/importmxmlpass1.cpp b/mscore/importmxmlpass1.cpp
index 580c93d9b..961512536 100644
--- a/mscore/importmxmlpass1.cpp
+++ b/mscore/importmxmlpass1.cpp
@@ -1656,7 +1656,7 @@ void MusicXMLParserPass1::scorePart()
       {
       Q_ASSERT(_e.isStartElement() && _e.name() == "score-part");
       _logger->logDebugTrace("MusicXMLParserPass1::scorePart", &_e);
-      QString id = _e.attributes().value("id").toString();
+      QString id = _e.attributes().value("id").toString().trimmed();
 
       if (_parts.contains(id)) {
             _logger->logError(QString("duplicate part id '%1'").arg(id), &_e);

@@ -1885,7 +1885,7 @@ void MusicXMLParserPass1::part()
       {
       Q_ASSERT(_e.isStartElement() && _e.name() == "part");
       _logger->logDebugTrace("MusicXMLParserPass1::part", &_e);
-      const QString id = _e.attributes().value("id").toString();
+      const QString id = _e.attributes().value("id").toString().trimmed();
 
       if (!_parts.contains(id)) {
             _logger->logError(QString("cannot find part '%1'").arg(id), &_e);