fix wrong conversion between fluid packet and real fluid

Author: GlodBlock

src/main/java/com/glodblock/github/common/item/fake/FakeFluids.java

@@ -142,12 +142,7 @@ public IAEFluidStack getAEStack(@Nullable IAEItemStack stack) {
                         if (stack == null) {
                             return null;
                         }
-                        IAEFluidStack fluidStack = AEFluidStack.fromFluidStack(getStack(stack.createItemStack()));
-                        if (fluidStack == null) {
-                            return null;
-                        }
-                        fluidStack.setStackSize(stack.getStackSize());
-                        return fluidStack;
+                        return AEFluidStack.fromFluidStack(getStack(stack.createItemStack()));
                     }
 
                     @Override

src/main/java/com/glodblock/github/integration/mek/FakeGases.java

@@ -140,9 +140,7 @@ public IAEGasStack getAEStack(@Nullable IAEItemStack stack) {
                         if (gas == null || gas.getGas() == null) {
                             return null;
                         }
-                        IAEGasStack gasStack = new AEGasStack(gas);
-                        gasStack.setStackSize(stack.getStackSize());
-                        return gasStack;
+                        return new AEGasStack(gas);
                     }
 
                     @Override