make winreg as optional

Cargo.toml

@@ -26,7 +26,12 @@ features = ["async"]
 
 [features]
 default = []
-# default = ["verify_binary_signature", "panic_on_unsent_packets", "async"]
+# default = [
+#     "verify_binary_signature",
+#     "panic_on_unsent_packets",
+#     "async",
+#     "winreg",
+# ]
 async = ["blocking", "futures"]
 panic_on_unsent_packets = []
 verify_binary_signature = []
@@ -55,7 +60,7 @@ windows-sys = { version = "0.59", features = [
     "Win32_System_LibraryLoader",
     "Win32_Security_WinTrust",
 ] }
-winreg = "0.52.0"
+winreg = { version = "0.52.0", optional = true }
 
 [dev-dependencies]
 dotenvy = "0.15"

src/adapter.rs

@@ -403,19 +403,21 @@ impl Adapter {
 
 impl Drop for Adapter {
     fn drop(&mut self) {
-        let name = self.get_name();
+        let _name = self.get_name();
         //Close adapter on drop
         //This is why we need an Arc of wintun
         unsafe { self.wintun.WintunCloseAdapter(self.adapter.0) };
         self.adapter = UnsafeHandle(ptr::null_mut());
-        if let Ok(name) = name {
+        #[cfg(feature = "winreg")]
+        if let Ok(name) = _name {
             // Delete registry related to network card
             _ = delete_adapter_info_from_reg(&name);
         }
     }
 }
 
 /// This function is used to avoid the adapter name and guid being recorded in the registry
+#[cfg(feature = "winreg")]
 pub(crate) fn delete_adapter_info_from_reg(dev_name: &str) -> std::io::Result<()> {
     use winreg::{enums::HKEY_LOCAL_MACHINE, enums::KEY_ALL_ACCESS, RegKey};
     let hklm = RegKey::predef(HKEY_LOCAL_MACHINE);