Avoid "stale plugin cache" warnings in flatpaks

flatpak (and ostree) report an st_mtime of 0 (or 1 in past versions)
for all files it controls, which does not match the real time recorded
when installing the plugins in the mock buildroot.  Therefore, check
this only when it appears to be real.

flatpak-cache.patch

@@ -0,0 +1,23 @@
+Based on the Flathub patch but only skip the mtime test when in an ostree
+(different versions have used 0 or 1 as the mtime for all files).
+
+https://github.com/flathub/org.videolan.VLC/blob/master/vlc-ignore-time-for-cache.patch
+
+diff --git a/src/modules/bank.c b/src/modules/bank.c
+index 2e67a0d07e..ab2915fbb7 100644
+--- a/src/modules/bank.c
++++ b/src/modules/bank.c
+@@ -275,7 +275,8 @@ static int AllocatePluginFile (module_bank_t *bank, const char *abspath,
+         plugin = vlc_cache_lookup(&bank->cache, relpath);
+ 
+         if (plugin != NULL
+-         && (plugin->mtime != (int64_t)st->st_mtime
++         && (((int64_t)st->st_mtime > (int64_t)1
++           && plugin->mtime != (int64_t)st->st_mtime)
+           || plugin->size != (uint64_t)st->st_size))
+         {
+             msg_Err(bank->obj, "stale plugins cache: modified %s",
+                     plugin->abspath);
+-- 
+2.21.0
+

vlc.spec

@@ -65,6 +65,8 @@ Patch:		lua-math.patch
 Patch:		freerdp2.patch
 # fix build with live555-2024.11.28
 Patch:		live555.patch
+# avoid "stale plugin cache" warnings in flatpaks
+Patch:		flatpak-cache.patch
 
 %{load:%{S:1}}
 %global __provides_exclude_from ^%{vlc_plugindir}/.*$