fix the hwmixvolume python3 interpreter selection

alsa-tools.spec

@@ -36,6 +36,8 @@ Source:         ftp://ftp.alsa-project.org/pub/tools/%{name}-%{version}.tar.bz2
 
 Source1:        90-alsa-tools-firmware.rules
 
+Patch1:         hwmixvolume-python.patch
+
 BuildRequires:  gcc gcc-c++
 BuildRequires:  alsa-lib-devel >= %{version}
 %if 0%{!?_without_tools:1}
@@ -92,6 +94,7 @@ The following tools are available:
 
 %prep
 %setup -q -n %{name}-%{version}
+%patch1 -p1 -b .hwmixvolume-python
 
 %build
 mv seq/sbiload . ; rm -rf seq

hwmixvolume-python.patch

@@ -0,0 +1,8 @@
+--- alsa-tools-1.1.7/hwmixvolume/hwmixvolume~	2018-10-16 10:08:36.000000000 +0200
++++ alsa-tools-1.1.7/hwmixvolume/hwmixvolume	2018-10-16 12:39:39.639476411 +0200
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # hwmixvolume - ALSA hardware mixer volume control applet
+ # Copyright (c) 2009-2010 Clemens Ladisch