py/emitnative.c: Fix stack adjustment when erroring on binary op.

py/emitnative.c

@@ -2077,10 +2077,10 @@ STATIC void emit_native_binary_op(emit_t *emit, mp_binary_op_t op) {
         }
         emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
     } else {
+        adjust_stack(emit, -1);
         EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
             "can't do binary op between '%q' and '%q'",
             vtype_to_qstr(vtype_lhs), vtype_to_qstr(vtype_rhs));
-        emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
     }
 }