Minor fix for default values

src/plugins/tprovoost/sequenceblocks/loop/SequenceFileImporterTileBatch.java

@@ -93,9 +93,9 @@ public class SequenceFileImporterTileBatch extends SequenceFileImporterBatch
         
         // lazy creation
         if (tileW == null)
-            tileW = new VarInteger("Tile width (-1 = auto)", 0);
+            tileW = new VarInteger("Tile width (-1 = auto)", -1);
         if (tileH == null)
-            tileH = new VarInteger("Tile height (-1 = auto)", 0);
+            tileH = new VarInteger("Tile height (-1 = auto)", -1);
 
         inputMap.add("tileWidht", tileW);
         inputMap.add("tileHeight", tileH);
@@ -109,9 +109,9 @@ public class SequenceFileImporterTileBatch extends SequenceFileImporterBatch
 
         // lazy creation
         if (tileW == null)
-            tileW = new VarInteger("Tile width (-1 = auto)", 0);
+            tileW = new VarInteger("Tile width (-1 = auto)", -1);
         if (tileH == null)
-            tileH = new VarInteger("Tile height (-1 = auto)", 0);
+            tileH = new VarInteger("Tile height (-1 = auto)", -1);
 
         loopVariables.add(tileW);
         loopVariables.add(tileH);