borrow &self in load_script so you can call more than one api lol

src/api/mod.rs

@@ -11,11 +11,11 @@ pub struct GuileApi {
 }
 
 impl GuileApi {
-    pub fn load_script(self, filename: &str) {
+    pub fn load_script(&self, filename: &str) {
         let filename = canonicalize(filename).unwrap();
         let cstr_bytes = CString::new(filename.as_os_str().as_bytes()).unwrap().into_bytes_with_nul();
         unsafe {
             scm_c_primitive_load_path(cstr_bytes.as_ptr() as *const std::os::raw::c_char);
         };
     }
-}
+}