Use a tag for the VST3 SDK wrap

CHANGELOG.md

@@ -6,6 +6,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic
 Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Packaging
+
+- The VST3 SDK Meson wrap now the `v3.7.1_build_50-patched` tag instead of a
+  commit hash.
+
 ## [3.0.2] - 2020-03-07
 
 ### Fixed

subprojects/vst3.wrap

@@ -2,6 +2,6 @@
 url = https://github.com/robbert-vdh/vst3sdk.git
 # This is VST3 SDK v3.7.1_build_50 with the documentation and VSTGUI submodules
 # removed
-revision = e2fbb41f28a4b311f2fc7d28e9b4330eec1802b6
+revision = v3.7.1_build_50-patched
 clone-recursive = true
 depth = 1