spotifyd: fix runtime crash.

Issue in unsafe code led to a runtime panic if compiled with Rust 1.48
or newer.

Relevant information: Spotifyd/spotifyd#719

Fixes void-linux#28285

srcpkgs/spotifyd/template

@@ -1,7 +1,7 @@
 # Template file for 'spotifyd'
 pkgname=spotifyd
 version=0.3.0
-revision=1
+revision=2
 build_style=cargo
 configure_args="--no-default-features"
 hostmakedepends="pkg-config"
@@ -35,6 +35,10 @@ case "$XBPS_TARGET_MACHINE" in
 	aarch64-musl) broken="https://travis-ci.org/void-linux/void-packages/jobs/636076091" ;;
 esac
 
+post_patch() {
+	vsed -e 's/"with-tremor"//' -i Cargo.toml
+}
+
 pre_build() {
 	cargo update --package openssl-sys --precise 0.9.58
 }