Some cppcheck cleaning

Change-Id: Id5be3a25fc66d2f7fcec8325491a23d6908021fc
diff --git a/canvas/source/vcl/canvashelper.cxx b/canvas/source/vcl/canvashelper.cxx
index 9ae3c8b..83f3ccf 100644
--- a/canvas/source/vcl/canvashelper.cxx
+++ b/canvas/source/vcl/canvashelper.cxx
@@ -483,7 +483,6 @@ namespace vclcanvas
            tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDev );

            const int nTransparency( setupOutDevState( viewState, renderState, FILL_COLOR ) );
            const int nTransPercent( (nTransparency * 100 + 128) / 255 );  // normal rounding, no truncation here
            ::basegfx::B2DPolyPolygon aB2DPolyPoly(
                ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPolyPolygon));
            aB2DPolyPoly.setClosed(true); // ensure closed poly, otherwise VCL does not fill
@@ -497,7 +496,8 @@ namespace vclcanvas
            }
            else
            {
                mpOutDev->getOutDev().DrawTransparent( aPolyPoly, (sal_uInt16)nTransPercent );
                const sal_uInt16 nTransPercent( (nTransparency * 100 + 128) / 255 );  // normal rounding, no truncation here
                mpOutDev->getOutDev().DrawTransparent( aPolyPoly, nTransPercent );
            }

            if( mp2ndOutDev )
diff --git a/canvas/source/vcl/canvashelper_texturefill.cxx b/canvas/source/vcl/canvashelper_texturefill.cxx
index 1021d33..df293a5 100644
--- a/canvas/source/vcl/canvashelper_texturefill.cxx
+++ b/canvas/source/vcl/canvashelper_texturefill.cxx
@@ -683,7 +683,6 @@ namespace vclcanvas
        {
            tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDev );

            const int nTransparency( setupOutDevState( viewState, renderState, IGNORE_COLOR ) );
            PolyPolygon aPolyPoly( tools::mapPolyPolygon(
                                       ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPolyPolygon),
                                       viewState, renderState ) );
@@ -711,6 +710,7 @@ namespace vclcanvas
                    }
                    else
                    {
                        const int nTransparency( setupOutDevState( viewState, renderState, IGNORE_COLOR ) );
                        std::vector< ::Color > aColors(rValues.maColors.getLength());
                        std::transform(&rValues.maColors[0],
                                       &rValues.maColors[0]+rValues.maColors.getLength(),
diff --git a/canvas/source/vcl/impltools.cxx b/canvas/source/vcl/impltools.cxx
index 0484d1e..09e20b4 100644
--- a/canvas/source/vcl/impltools.cxx
+++ b/canvas/source/vcl/impltools.cxx
@@ -245,13 +245,6 @@ namespace vclcanvas
                                                        aSrcRect,
                                                        rTransform );

            const bool bModulateColors( eModulationMode == MODULATE_WITH_DEVICECOLOR &&
                                        rDeviceColor.getLength() > 2 );
            const double nRedModulation( bModulateColors ? rDeviceColor[0] : 1.0 );
            const double nGreenModulation( bModulateColors ? rDeviceColor[1] : 1.0 );
            const double nBlueModulation( bModulateColors ? rDeviceColor[2] : 1.0 );
            const double nAlphaModulation( bModulateColors && rDeviceColor.getLength() > 3 ?
                                           rDeviceColor[3] : 1.0 );

            Bitmap aSrcBitmap( rBitmap.GetBitmap() );
            Bitmap aSrcAlpha;
@@ -336,6 +329,13 @@ namespace vclcanvas
                    ::basegfx::B2DHomMatrix aTransform( aLocalTransform );
                    aTransform.invert();

                    const bool bModulateColors( eModulationMode == MODULATE_WITH_DEVICECOLOR &&
                                        rDeviceColor.getLength() > 2 );
                    const double nRedModulation( bModulateColors ? rDeviceColor[0] : 1.0 );
                    const double nGreenModulation( bModulateColors ? rDeviceColor[1] : 1.0 );
                    const double nBlueModulation( bModulateColors ? rDeviceColor[2] : 1.0 );
                    const double nAlphaModulation( bModulateColors && rDeviceColor.getLength() > 3 ?
                                                   rDeviceColor[3] : 1.0 );
                    // for the time being, always read as ARGB
                    for( int y=0; y<aDestBmpSize.Height(); ++y )
                    {