Be sure to clear the buffer after an intermediate read error happened and we ignore it.

That way there won't be partial results.

Author: Byron

gix-config/src/file/init/from_paths.rs

@@ -110,6 +110,7 @@ impl File<'static> {
                                 path: path.clone()
                             }
                         );
+                        buf.clear();
                     } else {
                         return Err(Error::Io { source: err, path });
                     }

gix/src/config/cache/incubate.rs

@@ -118,6 +118,7 @@ fn load_config(
         };
         if lenient {
             log::warn!("ignoring: {err:#?}");
+            buf.clear();
         } else {
             return Err(err);
         }