thodg/libgit2

diff --git a/include/git2/config.h b/include/git2/config.h
index cad01ea..202d36a 100644
--- a/include/git2/config.h
+++ b/include/git2/config.h
@@ -73,7 +73,7 @@ typedef struct git_config_entry {
 /**
  * Free a config entry
  */
-GIT_EXTERN(void) git_config_entry_free(git_config_entry *);
+GIT_EXTERN(void) git_config_entry_free(git_config_entry *entry);
 
 /**
  * A config enumeration callback