gmrender-resurrect: disable on musl configurations

gmrender-resurrect uses <error.h>, which isn't available on musl
configuration, so let's disable this package in such situations.

Fixes:

  http://autobuild.buildroot.net/results/96a280a8115cd01d64670e4caf2471d3ee4581d9/
  (and numerous similar build failures)

Cc: kei-k@ca2.so-net.ne.jp <kei-k@ca2.so-net.ne.jp>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gmrender-resurrect/Config.in

@@ -3,6 +3,8 @@ config BR2_PACKAGE_GMRENDER_RESURRECT
 	depends on BR2_USE_WCHAR # gstreamer1 -> libglib2
 	depends on BR2_TOOLCHAIN_HAS_THREADS # gstreamer1 -> libglib2, libupnp
 	depends on BR2_USE_MMU # gstreamer1
+	# uses <error.h>
+	depends on !BR2_TOOLCHAIN_USES_MUSL
 	select BR2_PACKAGE_GSTREAMER1
 	select BR2_PACKAGE_GST1_PLUGINS_BASE # run-time only
 	select BR2_PACKAGE_LIBUPNP
@@ -11,6 +13,7 @@ config BR2_PACKAGE_GMRENDER_RESURRECT
 
 	  https://github.com/hzeller/gmrender-resurrect
 
-comment "gmrender-resurrect needs a toolchain w/ wchar, threads"
+comment "gmrender-resurrect needs an (e)glibc or uClibc toolchain w/ wchar, threads"
 	depends on BR2_USE_MMU
-	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || \
+		BR2_TOOLCHAIN_USES_MUSL