Merge #75: call reduce0 from reduce1/2

085129f call reduce0 from reduce1/2 (Riccardo Casatta)

Pull request description:

  once the terminal is wrapped it does the same checks and produce the same side effects

  same as rust-bitcoin/rust-miniscript#643

ACKs for top commit:
  apoelstra:
    ACK 085129f

Tree-SHA512: 55ee7bdb5bbf3419808c5e0ab2d232feba6b91256e5ae11736726737d0fbb2c1cdfaa6df796c8cfbc3c81265eddeb83ddd9571f1a8e062a8fc8fcfea3bb13c0c

src/miniscript/decode.rs

@@ -228,17 +228,7 @@ impl<Pk: MiniscriptKey, Ctx: ScriptContext, Ext: Extension> TerminalStack<Pk, Ct
         let top = self.pop().unwrap();
         let wrapped_ms = wrap(Arc::new(top));
 
-        let ty = Type::type_check(&wrapped_ms)?;
-        let ext = ExtData::type_check(&wrapped_ms)?;
-        let ms = Miniscript {
-            node: wrapped_ms,
-            ty,
-            ext,
-            phantom: PhantomData,
-        };
-        Ctx::check_global_validity(&ms)?;
-        self.0.push(ms);
-        Ok(())
+        self.reduce0(wrapped_ms)
     }
 
     ///reduce, type check and push a 2-arg node
@@ -254,17 +244,7 @@ impl<Pk: MiniscriptKey, Ctx: ScriptContext, Ext: Extension> TerminalStack<Pk, Ct
 
         let wrapped_ms = wrap(Arc::new(left), Arc::new(right));
 
-        let ty = Type::type_check(&wrapped_ms)?;
-        let ext = ExtData::type_check(&wrapped_ms)?;
-        let ms = Miniscript {
-            node: wrapped_ms,
-            ty,
-            ext,
-            phantom: PhantomData,
-        };
-        Ctx::check_global_validity(&ms)?;
-        self.0.push(ms);
-        Ok(())
+        self.reduce0(wrapped_ms)
     }
 }