Patch to get zsync2 building with GCC14, likely no less functional than it was before, considering it doesn't try to use off64_t instead of off_t

zsync2.patch

diff --git a/lib/libzsync/zsync.c b/lib/libzsync/zsync.c
index b425db9..02c47ad 100644
--- a/lib/libzsync/zsync.c
+++ b/lib/libzsync/zsync.c
@@ -40,6 +40,8 @@
 #include <unistd.h>
 #include <string.h>
 #include <ctype.h>
+
+#define __USE_XOPEN 1
 #include <time.h>
 
 #include <arpa/inet.h>
@@ -457,12 +459,12 @@ const char *const *zsync_get_urls(struct zsync_state *zs, int *n, int *t) {
     if (zs->zmap && zs->nzurl) {
         *n = zs->nzurl;
         *t = 1;
-        return zs->zurl;
+        return (const char *const *) zs->zurl;
     }
     else {
         *n = zs->nurl;
         *t = 0;
-        return zs->url;
+        return (const char *const *) zs->url;
     }
 }
 
@@ -946,8 +948,10 @@ static int zsync_receive_data_compressed(struct zsync_receiver *zr,
     zr->strm.avail_in = len;
 
     if (zr->strm.total_in == 0 || offset != zr->strm.total_in) {
+        long long outoffset = zr->outoffset;
         zsync_configure_zstream_for_zdata(zr->zs, &(zr->strm), offset,
-                                          &(zr->outoffset));
+                                          &outoffset);
+        zr->outoffset = (off_t) outoffset;
 
         /* On first iteration, we might be reading an incomplete block from zsync's point of view. Limit avail_out so we can stop after doing that and realign with the buffer. */
         zr->strm.avail_out = blocksize - (zr->outoffset % blocksize);
diff --git a/src/format_string.h b/src/format_string.h
index 7b21773..d114969 100644
--- a/src/format_string.h
+++ b/src/format_string.h
@@ -22,16 +22,16 @@
 #endif
 
 #if SIZEOF_OFF_T == 8
-# ifdef PRIu64
-#  define OFF_T_PF "%" PRIu64
+# ifdef PRIi64
+#  define OFF_T_PF "%" PRIi64
 # else
-#  define OFF_T_PF "%llu"
+#  define OFF_T_PF "%lld"
 # endif
 #else
-# ifdef PRIu32
-#  define OFF_T_PF "%" PRIu32
+# ifdef PRIi32
+#  define OFF_T_PF "%" PRIi32
 # else
-#  define OFF_T_PF "%lu"
+#  define OFF_T_PF "%ld"
 # endif
 #endif