- another fix in deserialization of TerrainGrid

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8685 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/terrain/com/jme3/terrain/geomipmap/TerrainGrid.java

@@ -238,7 +238,7 @@ public class TerrainGrid extends TerrainQuad {
     public TerrainGrid() {
     }
 
-    private void initData(){
+    private void initData() {
         int maxVisibleSize = size;
         this.quarterSize = maxVisibleSize >> 2;
         this.quadSize = (maxVisibleSize + 1) >> 1;
@@ -452,10 +452,12 @@ public class TerrainGrid extends TerrainQuad {
         offsetAmount = c.readFloat("offsetAmount", 0);
         terrainQuadGrid = (TerrainQuadGrid) c.readSavable("terrainQuadGrid", null);
         initData();
+        if (terrainQuadGrid != null) {
             terrainQuadGrid.setSize(this.size);
             terrainQuadGrid.setPatchSize(this.patchSize);
             terrainQuadGrid.setQuadSize(this.quadSize);
         }
+    }
 
     @Override
     public void write(JmeExporter ex) throws IOException {