fix: correct type for ngx::core::NGX_CONF_ERROR

Author: bavshin-f5

examples/awssig.rs

@@ -230,7 +230,7 @@ extern "C" fn ngx_http_awssigv4_commands_set_s3_bucket(
         conf.s3_bucket = (*args.add(1)).to_string();
         if conf.s3_bucket.len() == 1 {
             println!("Validation failed");
-            return ngx::core::NGX_CONF_ERROR as _;
+            return ngx::core::NGX_CONF_ERROR;
         }
     };
     std::ptr::null_mut()

src/core/status.rs

@@ -1,4 +1,6 @@
+use core::ffi::c_char;
 use core::fmt;
+use core::ptr;
 
 use crate::ffi::*;
 
@@ -62,6 +64,7 @@ ngx_codes! {
     (NGX_ABORT);
 }
 
-/// NGX_CONF_ERROR - An error occurred while parsing and validating configuration.
-pub const NGX_CONF_ERROR: *const () = -1isize as *const ();
-// pub const CONF_OK: Status = Status(NGX_CONF_OK as ngx_int_t);
+/// An error occurred while parsing and validating configuration.
+pub const NGX_CONF_ERROR: *mut c_char = ptr::null_mut::<c_char>().wrapping_offset(-1);
+/// Configuration handler succeeded.
+pub const NGX_CONF_OK: *mut c_char = ptr::null_mut();