Merge pull request #602 from triska/put_char

put_char/[1,2]: throw type errors for atoms that are not characters

src/machine/system_calls.rs

@@ -1905,7 +1905,6 @@ impl MachineState {
                                         }
                                     }
                                     _ => {
-                                        unreachable!()
                                     }
                                 }
                             }