forked-daapd: fix compilation with GCC10

Signed-off-by: Rosen Penev <rosenp@gmail.com>

sound/forked-daapd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=forked-daapd
 PKG_VERSION:=27.1
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://github.com/ejurgensen/$(PKG_NAME)/releases/download/$(PKG_VERSION)/

sound/forked-daapd/patches/020-gcc10.patch

@@ -0,0 +1,20 @@
+--- a/src/outputs.h
++++ b/src/outputs.h
+@@ -185,7 +185,7 @@ struct output_data
+   int samples;
+ };
+ 
+-struct output_buffer
++static struct output_buffer
+ {
+   struct timespec pts;
+   // The array is two larger than max quality subscriptions because element 0
+@@ -262,7 +262,7 @@ struct output_definition
+ };
+ 
+ // Our main list of devices, not for use by backend modules
+-struct output_device *output_device_list;
++static struct output_device *output_device_list;
+ 
+ /* ------------------------------- General use ------------------------------ */
+