Fix potential NPE

Author: shedaniel

fabric/src/main/java/me/shedaniel/rei/impl/client/fabric/CreativeModeTabCollectorImpl.java

@@ -27,6 +27,7 @@
 import me.shedaniel.rei.impl.common.InternalLogger;
 import net.fabricmc.fabric.api.itemgroup.v1.FabricItemGroupEntries;
 import net.fabricmc.fabric.api.itemgroup.v1.ItemGroupEvents;
+import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.world.flag.FeatureFlagSet;
@@ -35,16 +36,13 @@
 import net.minecraft.world.item.CreativeModeTabs;
 import net.minecraft.world.item.ItemStack;
 
-import java.util.Collection;
-import java.util.LinkedHashMap;
-import java.util.LinkedList;
-import java.util.Map;
+import java.util.*;
 
 public class CreativeModeTabCollectorImpl {
     public static Map<CreativeModeTab, Collection<ItemStack>> collectTabs() {
         Map<CreativeModeTab, Collection<ItemStack>> map = new LinkedHashMap<>();
         FeatureFlagSet featureFlags = FeatureFlags.REGISTRY.allFlags();
-        CreativeModeTab.ItemDisplayParameters parameters = new CreativeModeTab.ItemDisplayParameters(featureFlags, true, BasicDisplay.registryAccess());
+        CreativeModeTab.ItemDisplayParameters parameters = new CreativeModeTab.ItemDisplayParameters(featureFlags, true, Objects.requireNonNullElseGet(BasicDisplay.registryAccess(), () -> RegistryAccess.fromRegistryOfRegistries(BuiltInRegistries.REGISTRY)));
 
         for (CreativeModeTab tab : CreativeModeTabs.allTabs()) {
             if (tab.getType() != CreativeModeTab.Type.HOTBAR && tab.getType() != CreativeModeTab.Type.INVENTORY) {