http: rename 'new' variables

Rename C++ keyword in order to bring the codebase closer to being able
to be compiled with a C++ compiler.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http.c

@@ -1194,14 +1194,14 @@ static struct fill_chain *fill_cfg;
 
 void add_fill_function(void *data, int (*fill)(void *))
 {
-	struct fill_chain *new = xmalloc(sizeof(*new));
+	struct fill_chain *new_fill = xmalloc(sizeof(*new_fill));
 	struct fill_chain **linkp = &fill_cfg;
-	new->data = data;
+	new_fill->data = data;
-	new->fill = fill;
+	new_fill->fill = fill;
-	new->next = NULL;
+	new_fill->next = NULL;
 	while (*linkp)
 		linkp = &(*linkp)->next;
-	*linkp = new;
+	*linkp = new_fill;
 }
 
 void fill_active_slots(void)