Fix FTBFS on s390x.

mod_http2-1.15.5-warnfix.patch

@@ -0,0 +1,66 @@
+From e21a68a6c4e94cdafccb869c5aa9d771b0e18b91 Mon Sep 17 00:00:00 2001
+From: Joe Orton <jorton@redhat.com>
+Date: Fri, 7 Feb 2020 13:23:10 +0000
+Subject: [PATCH] Remove unused leave_ctx from h2_beam_lock structure and
+ adjust callers.
+
+Not sure why but I'm seeing gcc 10 warnings on s390x (only) for this.
+
+h2_bucket_beam.c: In function 'h2_beam_abort':
+h2_bucket_beam.c:222:9: error: 'bl.leave_ctx' may be used uninitialized in this function [-Werror=maybe-uninitialized]
+  222 |         pbl->leave(pbl->leave_ctx, pbl->mutex);
+      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+h2_bucket_beam.c:710:18: note: 'bl.leave_ctx' was declared here
+  710 |     h2_beam_lock bl;
+      |                  ^~
+h2_bucket_beam.c: In function 'h2_beam_close':
+h2_bucket_beam.c:222:9: error: 'bl.leave_ctx' may be used uninitialized in this function [-Werror=maybe-uninitialized]
+  222 |         pbl->leave(pbl->leave_ctx, pbl->mutex);
+      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---
+ mod_http2/h2_bucket_beam.c | 5 ++---
+ mod_http2/h2_bucket_beam.h | 3 +--
+ 2 files changed, 3 insertions(+), 5 deletions(-)
+
+diff --git a/mod_http2/h2_bucket_beam.c b/mod_http2/h2_bucket_beam.c
+index a7f5edf..607ac1e 100644
+--- a/mod_http2/h2_bucket_beam.c
++++ b/mod_http2/h2_bucket_beam.c
+@@ -196,9 +196,8 @@ static apr_bucket *h2_beam_bucket(h2_bucket_beam *beam,
+  * bucket beam that can transport buckets across threads
+  ******************************************************************************/
+ 
+-static void mutex_leave(void *ctx, apr_thread_mutex_t *lock)
++static void mutex_leave(apr_thread_mutex_t *lock)
+ {
+-    (void)ctx;
+     apr_thread_mutex_unlock(lock);
+ }
+ 
+@@ -219,7 +218,7 @@ static void leave_yellow(h2_bucket_beam *beam, h2_beam_lock *pbl)
+ {
+     (void)beam;
+     if (pbl->leave) {
+-        pbl->leave(pbl->leave_ctx, pbl->mutex);
++        pbl->leave(pbl->mutex);
+     }
+ }
+ 
+diff --git a/mod_http2/h2_bucket_beam.h b/mod_http2/h2_bucket_beam.h
+index f260762..1a6418c 100644
+--- a/mod_http2/h2_bucket_beam.h
++++ b/mod_http2/h2_bucket_beam.h
+@@ -126,12 +126,11 @@ typedef struct {
+  * buffers until the transmission is complete. Star gates use a similar trick.
+  */
+ 
+-typedef void h2_beam_mutex_leave(void *ctx,  struct apr_thread_mutex_t *lock);
++typedef void h2_beam_mutex_leave(struct apr_thread_mutex_t *lock);
+ 
+ typedef struct {
+     apr_thread_mutex_t *mutex;
+     h2_beam_mutex_leave *leave;
+-    void *leave_ctx;
+ } h2_beam_lock;
+ 
+ typedef struct h2_bucket_beam h2_bucket_beam;