Fixed issue #797. Custom seam allowance ignored in some cases.

(grafted from 3d77c1493f427eefbad7d98a828cd64061b72759)

--HG--
branch : develop

ChangeLog.txt

@@ -81,6 +81,7 @@
 - [#776] Valentina cannot recognize translated functions.
 - [#778] Calling Valentina with "-h" option opens information dialog instead of writing to console.
 - [#788] Unhardcode icon path in GNU/Linux launcher.
+- [#797] Custom seam allowance ignored in some cases.
 
 # Version 0.5.0 May 9, 2017
 - [#581] User can now filter input lists by keyword in function wizard.

src/libs/vpatterndb/vpiece.cpp

@@ -837,7 +837,7 @@ QVector<VPieceNode> VPiece::GetUnitedPath(const VContainer *data) const
             }
 
             const QVector<VPieceNode> midBefore = united.mid(0, indexStartPoint+1);
-            const QVector<VPieceNode> midAfter = united.mid(indexEndPoint);
+            const QVector<VPieceNode> midAfter = united.mid(indexEndPoint, united.size() - midBefore.size());
 
             QVector<VPieceNode> customNodes = data->GetPiecePath(records.at(i).path).GetNodes();
             if (records.at(i).reverse)
@@ -887,8 +887,7 @@ QVector<CustomSARecord> VPiece::GetValidRecords() const
                 && indexStartPoint != -1
                 && not d->m_path.at(indexStartPoint).IsExcluded()
                 && indexEndPoint != -1
-                && not d->m_path.at(indexEndPoint).IsExcluded()
-                && indexStartPoint < indexEndPoint)
+                && not d->m_path.at(indexEndPoint).IsExcluded())
         {
             records.append(record);
         }