Include `String` in the default import, since we use it now

diff --git a/c-bindings-gen/src/main.rs b/c-bindings-gen/src/main.rs
index ad2690ce8a0ff99ac6695b18ac0607451f143ead..bca6aa5c02bdf0307043fe3ff1c6f9a755da3016 100644 (file)
--- a/c-bindings-gen/src/main.rs
+++ b/c-bindings-gen/src/main.rs
@@ -36,6 +36,7 @@ use blocks::*;
 
 const DEFAULT_IMPORTS: &'static str = "
 use alloc::str::FromStr;
+use alloc::string::String;
 use core::ffi::c_void;
 use core::convert::Infallible;
 use bitcoin::hashes::Hash;