turn off optimisation in Microsoft Visual Studio for TextlineProjection::TruncateToImageBounds#pragma optimize( "", on )

fix issue 1496

Author: zdenop

textord/textlineprojection.cpp

@@ -751,11 +751,17 @@ void TextlineProjection::TransformToPixCoords(const DENORM* denorm,
   pt->y = ImageYToProjectionY(pt->y);
 }
 
+#ifdef _MSC_VER
+#pragma optimize("g", off)
+#endif  // _MSC_VER
 // Helper truncates the TPOINT to be within the pix_.
 void TextlineProjection::TruncateToImageBounds(TPOINT* pt) const {
   pt->x = ClipToRange<int>(pt->x, 0, pixGetWidth(pix_) - 1);
   pt->y = ClipToRange<int>(pt->y, 0, pixGetHeight(pix_) - 1);
 }
+#ifdef _MSC_VER
+#pragma optimize( "", on )
+#endif  // _MSC_VER
 
 // Transform tesseract image coordinates to coordinates used in the projection.
 int TextlineProjection::ImageXToProjectionX(int x) const {