audio/mumble: Add missing patch to make builds reliable

PR:		240402
MFH:		2019Q4

audio/mumble/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	mumble
 PORTVERSION=	1.3.0
-PORTREVISION=	0
+PORTREVISION=	1
 CATEGORIES=	audio
 
 MAINTAINER=	feld@FreeBSD.org

audio/mumble/files/patch-qmake_builddir.pri

@@ -0,0 +1,24 @@
+--- qmake/builddir.pri.orig	2019-10-20 18:28:58 UTC
++++ qmake/builddir.pri
+@@ -33,20 +33,7 @@ isEmpty(TOP_BUILDDIR) {
+   TOP_BUILDDIR = $$TOP_SRCDIR
+ }
+ 
+-# If the build and source paths are equal,
+-# it's not a shadow build.
+-equals(TOP_BUILDDIR, $$TOP_SRCDIR) {
+-  CONFIG(debug, debug|release) {
+-    DESTDIR = $$TOP_BUILDDIR/debug
+-  }
+-
+-  CONFIG(release, debug|release) {
+-    DESTDIR = $$TOP_BUILDDIR/release
+-  }
+-} else {
+-  DESTDIR = $$TOP_BUILDDIR
+-}
+-
++DESTDIR = $$TOP_BUILDDIR/release
+ OBJECTS_ROOT = $$DESTDIR/.obj
+ MOC_ROOT = $$DESTDIR/.moc
+ RCC_ROOT = $$DESTDIR/.qrc