SmelteryLogic: don't crash when melting Endermen with a Smeltery

A FluidStack was being incorrectly constructed, causing the game to bomb out
when ender fluid was added to the Smeltery.

Signed-off-by: Steven Noonan <steven@uplinklabs.net>

src/tconstruct/blocks/logic/SmelteryLogic.java

@@ -325,7 +325,7 @@ else if (o instanceof EntityEnderman)
                 {
                     if (currentLiquid + 25 < maxLiquid)
                     {
-                        this.addMoltenMetal(new FluidStack(TContent.moltenEnder.blockID, 25), false);
+                        this.addMoltenMetal(new FluidStack(TContent.moltenEnderFluid, 25), false);
                     }
                 }
             }