Prefer prefix ++/-- operators for non-primitive types

+ use const_iterator for end iterator

Change-Id: Ib07b71bb878665126666db3569bd5a40e23eff5e

drawinglayer/source/primitive2d/markerarrayprimitive2d.cxx

@@ -107,7 +107,7 @@ namespace drawinglayer
             if(getPositions().size())
             {
                 // get the basic range from the position vector
-                for(std::vector< basegfx::B2DPoint >::const_iterator aIter(getPositions().begin()); aIter != getPositions().end(); aIter++)
+                for(std::vector< basegfx::B2DPoint >::const_iterator aIter(getPositions().begin()), aEnd(getPositions().end()); aIter != aEnd; ++aIter)
                 {
                     aRetval.expand(*aIter);
                 }

drawinglayer/source/primitive2d/pointarrayprimitive2d.cxx

@@ -60,7 +60,7 @@ namespace drawinglayer
                 basegfx::B2DRange aNewRange;
 
                 // get the basic range from the position vector
-                for(std::vector< basegfx::B2DPoint >::const_iterator aIter(getPositions().begin()); aIter != getPositions().end(); aIter++)
+                for(std::vector< basegfx::B2DPoint >::const_iterator aIter(getPositions().begin()), aEnd(getPositions().end()); aIter != aEnd; ++aIter)
                 {
                     aNewRange.expand(*aIter);
                 }