Fix EDID parsing: strings can be 13 bytes

The spec gives 13 bytes (5 header, 13 data in increments of 18).

Change-Id: I059590cd750ac403a1f3b44b5f9a0ee300cff5b5
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Pier Luigi Fiorini <pierluigi.fiorini@liri.io>

src/platformsupport/edid/qedidparser.cpp

@@ -160,7 +160,7 @@ bool QEdidParser::parse(const QByteArray &blob)
 
 QString QEdidParser::parseEdidString(const quint8 *data)
 {
-    QByteArray buffer(reinterpret_cast<const char *>(data), 12);
+    QByteArray buffer(reinterpret_cast<const char *>(data), 13);
 
     // Erase carriage return and line feed
     buffer = buffer.replace('\r', '\0').replace('\n', '\0');