Allow for creating patch series

This allows for specifying a revision range using the id2 parameter of
/patch/. The output that is produced is similar to

    $ git format-patch --stdout id2..id

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/cmd.c b/cmd.c
index 9893710..0202917 100644
--- a/cmd.c
+++ b/cmd.c
@@ -98,7 +98,7 @@ static void repolist_fn(struct cgit_context *ctx)
 
 static void patch_fn(struct cgit_context *ctx)
 {
-        cgit_print_patch(ctx->qry.sha1, ctx->qry.path);
+        cgit_print_patch(ctx->qry.sha1, ctx->qry.sha2, ctx->qry.path);
 }
 
 static void plain_fn(struct cgit_context *ctx)