delete index.dhtin/out.heap if restore fails

see http://forum.yacy-websuche.de/viewtopic.php?p=9613#p9613

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5097 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/index/indexRAMRI.java

@@ -75,6 +75,12 @@ public final class indexRAMRI implements indexRI, indexRIReader {
                 }
             } catch (final IOException e){
                 log.logSevere("unable to restore cache dump: " + e.getMessage(), e);
+                indexHeapFile.delete();
+                heap.initWriteMode();
+            } catch (final NegativeArraySizeException e){
+            	log.logSevere("unable to restore cache dump: " + e.getMessage(), e);
+                indexHeapFile.delete();
+                heap.initWriteMode();
             }
         } else {
             heap.initWriteMode();