package/gerbera: fix build with fmt >= 9.0.0

Fix the following build failure with fmt >= 9.0.0 raised since commit
5c83dc5451fb59ffa5cd40d30c4c532dd25e8333:

/tmp/instance-5/output-1/build/gerbera-1.10.0/src/database/sql_database.cc:1688:26:   required from here
/tmp/instance-5/output-1/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/fmt/format.h:3973:36: error: passing 'const fmt::v9::formatter<fmt::v9::join_view<__gnu_cxx::__normal_iterator<const ColumnUpdate*, std::vector<ColumnUpdate> >, __gnu_cxx::__normal_iterator<const ColumnUpdate*, std::vector<ColumnUpdate> >, char>, char, void>::formatter_type' {aka 'const fmt::v9::formatter<ColumnUpdate>'} as 'this' argument discards qualifiers [-fpermissive]
 3973 |       out = value_formatter_.format(map(*it), ctx);
      |             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/56c46fa7e922360d2c4b4093f8a030cc83726799

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gerbera/0001-Fix-build-with-fmt-9-0.patch

@@ -0,0 +1,36 @@
+From d7b8fafbc94405c20753fed569abd8878cccde89 Mon Sep 17 00:00:00 2001
+From: Felix Yan <felixonmars@archlinux.org>
+Date: Fri, 19 Aug 2022 15:22:10 +0300
+Subject: [PATCH] Fix build with fmt 9.0
+
+Fixes #2681
+
+[Retrieved from:
+https://github.com/gerbera/gerbera/commit/d7b8fafbc94405c20753fed569abd8878cccde89]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ src/database/sql_format.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/database/sql_format.h b/src/database/sql_format.h
+index 32dc00efa..e4e1909a8 100644
+--- a/src/database/sql_format.h
++++ b/src/database/sql_format.h
+@@ -42,7 +42,7 @@ struct SQLIdentifier {
+ template <>
+ struct fmt::formatter<SQLIdentifier> : formatter<std::string_view> {
+     template <typename FormatContext>
+-    auto format(const SQLIdentifier& tn, FormatContext& ctx) -> decltype(ctx.out())
++    auto format(const SQLIdentifier& tn, FormatContext& ctx) const -> decltype(ctx.out())
+     {
+         return format_to(ctx.out(), "{}{}{}", tn.quote_begin, tn.name, tn.quote_end);
+     }
+@@ -61,7 +61,7 @@ struct ColumnUpdate {
+ template <>
+ struct fmt::formatter<ColumnUpdate> : formatter<std::string_view> {
+     template <typename FormatContext>
+-    auto format(const ColumnUpdate& a, FormatContext& ctx) -> decltype(ctx.out())
++    auto format(const ColumnUpdate& a, FormatContext& ctx) const -> decltype(ctx.out())
+     {
+         return format_to(ctx.out(), "{} = {}", a.column, a.value);
+     }