Fixed crash when configuring an Exporter, fixes #1413

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### 1.5.16
 - Fixed crash when placing a Controller (raoulvdberge)
+- Fixed crash when configuring an Exporter (raoulvdberge)
 
 ### 1.5.15
 - Updated Forge to 2444 (MC 1.12.1) (raoulvdberge)

src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeExporter.java

@@ -150,6 +150,7 @@ public class NetworkNodeExporter extends NetworkNode implements IComparable, ITy
                 if (took != null && ItemHandlerHelper.insertItem(handler, took, true).isEmpty()) {
                     took = network.extractItem(slot, 1, compare, false);
 
+                    if (took != null) {
                         ItemHandlerHelper.insertItem(handler, took, false);
 
                         craftOnlyToExtract[i]--;
@@ -159,6 +160,7 @@ public class NetworkNodeExporter extends NetworkNode implements IComparable, ITy
                             craftOnlyTask[i] = null;
                         }
                     }
+                }
             } else if (!network.getCraftingManager().getTasks().contains(craftOnlyTask[i])) {
                 craftOnlyTask[i] = null;
             }
@@ -188,10 +190,12 @@ public class NetworkNodeExporter extends NetworkNode implements IComparable, ITy
             } else if (ItemHandlerHelper.insertItem(handler, took, true).isEmpty()) {
                 took = network.extractItem(slot, upgrades.getItemInteractCount(), compare, false);
 
+                if (took != null) {
                     ItemHandlerHelper.insertItem(handler, took, false);
                 }
             }
         }
+    }
 
     @Override
     public int getCompare() {