Fix sharing in a couple more places.

Author: aardvark179

src/main/java/org/truffleruby/core/array/ArrayNodes.java

@@ -184,7 +184,7 @@ protected RubyArray mulOther(RubyArray array, int count,
             } catch (ArithmeticException e) {
                 throw new RaiseException(getContext(), coreExceptions().rangeError("new array size too large", this));
             }
-            final Object newStore = arrays.allocator(store).allocate(newSize);
+            final Object newStore = arrays.unsharedAllocator(store).allocate(newSize);
             int n = 0;
             try {
                 for (; loopProfile.inject(n < count); n++) {
@@ -2217,7 +2217,7 @@ protected RubyArray sortVeryShort(VirtualFrame frame, RubyArray array, Nil block
                 @Cached DispatchNode compareDispatchNode,
                 @Cached CmpIntNode cmpIntNode) {
             final Object newStore = stores
-                    .allocator(store)
+                    .unsharedAllocator(store)
                     .allocate(getContext().getOptions().ARRAY_SMALL);
             final int size = arraySizeProfile.profile(array.size);
 

src/main/java/org/truffleruby/core/array/library/ZeroLengthArrayStore.java

@@ -214,7 +214,7 @@ protected static Object allocateForNewStore(ZeroLengthArrayStore store, Object n
             // We have to be careful here in case newStore is a a
             // wrapped version of the zero length store, and we don't
             // want to end up recursing back to this case repeatedly.
-            return newStores.allocateForNewStore(newStore, store, length);
+            return newStores.unsharedAllocateForNewStore(newStore, store, length);
         }
 
         protected static boolean zeroLengthStore(Object store) {