Get minor fixes from remote.

src/main/java/de/tudresden/inf/mci/brailleplot/rendering/FunctionalRasterizer.java

@@ -28,8 +28,8 @@ public class FunctionalRasterizer<T extends Renderable> implements Rasterizer {
     @Override
     public void rasterize(final Renderable data, final RasterCanvas canvas) throws InsufficientRenderingAreaException {
         // invoke the given rasterizing algorithm
-        T diagram = safeCast(data);
-        mRasterizingAlgorithm.accept(diagram, canvas);
+        T safeData = safeCast(data);
+        mRasterizingAlgorithm.accept(safeData, canvas);
     }
 
     final Class<? extends T> getSupportedRenderableClass() {
@@ -37,7 +37,7 @@ public class FunctionalRasterizer<T extends Renderable> implements Rasterizer {
     }
 
     @SuppressWarnings("unchecked")
-    // This is allowed, because the code that calls the rasterize method does a lookup based on the diagram class beforehand
+    // This is allowed, because the code that calls the rasterize method does a lookup based on the renderable class beforehand
     // and will only select the appropriate rasterizer. (See FunctionalRenderingBase)
     // Since the FunctionalRasterizer is package private, there is no way to invoke it with the wrong type from 'outside'.
     // Should somebody still force this to happen by intentional tampering, we have no choice but to catch this disgrace.