fetch.c: remove an unused variable and dead code.

Funnily enough, this variable was never assigned ever since it
was introduced, and has been protecting some code that has never
been executed.

Signed-off-by: Junio C Hamano <junkio@cox.net>

fetch.c

diff --git a/fetch.c b/fetch.c
index 73bde07..f7f8902 100644
--- a/fetch.c
+++ b/fetch.c
@@ -9,8 +9,6 @@
 
 const char *write_ref = NULL;
 
-const unsigned char *current_ref = NULL;
-
 int get_tree = 0;
 int get_history = 0;
 int get_all = 0;
@@ -205,19 +203,12 @@
 int pull(char *target)
 {
 	unsigned char sha1[20];
-	int fd = -1;
 
 	save_commit_buffer = 0;
 	track_object_refs = 0;
-	if (write_ref && current_ref) {
-		fd = lock_ref_sha1(write_ref, current_ref);
-		if (fd < 0)
-			return -1;
-	}
 
-	if (!get_recover) {
+	if (!get_recover)
 		for_each_ref(mark_complete);
-	}
 
 	if (interpret_target(target, sha1))
 		return error("Could not interpret %s as something to pull",
@@ -227,12 +218,7 @@
 	if (loop())
 		return -1;
 	
-	if (write_ref) {
-		if (current_ref) {
-			write_ref_sha1(write_ref, fd, sha1);
-		} else {
-			write_ref_sha1_unlocked(write_ref, sha1);
-		}
-	}
+	if (write_ref)
+		write_ref_sha1_unlocked(write_ref, sha1);
 	return 0;
 }

fetch.h

diff --git a/fetch.h b/fetch.h
index 9837a3d..001a6b8 100644
--- a/fetch.h
+++ b/fetch.h
@@ -25,9 +25,6 @@
 /* If set, the ref filename to write the target value to. */
 extern const char *write_ref;
 
-/* If set, the hash that the current value of write_ref must be. */
-extern const unsigned char *current_ref;
-
 /* Set to fetch the target tree. */
 extern int get_tree;