Update printf-compat

fish-rust/Cargo.lock

@@ -821,7 +821,7 @@ dependencies = [
 [[package]]
 name = "printf-compat"
 version = "0.1.1"
-source = "git+https://github.com/fish-shell/printf-compat.git?branch=fish#d5f98dc8ce7a63e6639b08082ffbc6499021260c"
+source = "git+https://github.com/fish-shell/printf-compat.git?branch=fish#ff460021ba11e2a2c69e1fe04cb1961d6a75be15"
 dependencies = [
  "bitflags",
  "itertools 0.9.0",

fish-rust/src/builtins/printf.rs

@@ -266,11 +266,16 @@ impl<'a> builtin_printf_state_t<'a> {
             $fmt:expr, // format string of type &wstr
             $($arg:expr),* // arguments
             ) => {
-                sprintf_locale(
-                    $fmt,
-                    &self.locale,
-                    &[$($arg.to_arg()),*]
-                )
+                {
+                    let mut target = WString::new();
+                    sprintf_locale(
+                        &mut target,
+                        $fmt,
+                        &self.locale,
+                        &[$($arg.to_arg()),*]
+                    );
+                    target
+                }
             }
         }