reintroduce autoreconf in %prep

... and fix a misleading comment in libnice-0.1.14-tests-koji.patch

If autoreconf does not run before the configure script, the subsequent
`make` command runs the configure script once again.  Moreover the build
fails in the fedora-28-x86_64 mock profile because aclocal-1.16 is not
available:

[...]
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
+ sed -i 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' libtool
+ sed -i 's|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' libtool
+ make -j8 V=1
CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh /builddir/build/BUILD/libnice-0.1.16/missing aclocal-1.16 -I m4
/builddir/build/BUILD/libnice-0.1.16/missing: line 81: aclocal-1.16: command not found
WARNING: 'aclocal-1.16' is missing on your system.
         You should only need it if you modified 'acinclude.m4' or
         'configure.ac' or m4 files included by 'configure.ac'.
         The 'aclocal' program is part of the GNU Automake package:
         <https://www.gnu.org/software/automake>
         It also requires GNU Autoconf, GNU m4 and Perl in order to run:
         <https://www.gnu.org/software/autoconf>
         <https://www.gnu.org/software/m4/>
         <https://www.perl.org/>
make: *** [Makefile:455: aclocal.m4] Error 127
error: Bad exit status from /var/tmp/rpm-tmp.jpPP9q (%build)

libnice-0.1.14-tests-koji.patch

@@ -3,7 +3,7 @@ From: Kamil Dudka <kdudka@redhat.com>
 Date: Fri, 9 Feb 2018 19:10:20 +0100
 Subject: [PATCH] tests: make the test-suite more verbose
 
-... and skip test-gstreamer if user's home is not /builddir (a heuristic
+... and skip test-gstreamer if user's home is /builddir (a heuristic
 to detect mock) because multicast traffic is blocked on Koji buildhosts.
 ---
  configure.ac | 4 ++--

libnice.spec

@@ -3,7 +3,7 @@
 
 Name:           libnice
 Version:        0.1.16
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        GLib ICE implementation
 
 License:        LGPLv2 and MPLv1.1
@@ -13,6 +13,8 @@ Source0:        https://nice.freedesktop.org/releases/%{name}-%{version}.tar.gz
 # make tests pass in Koji
 Patch1:         libnice-0.1.14-tests-koji.patch
 
+BuildRequires:  autoconf
+BuildRequires:  automake
 BuildRequires:  glib2-devel
 BuildRequires:  gnutls-devel >= 2.12.0
 BuildRequires:  gobject-introspection-devel
@@ -74,6 +76,9 @@ sed -e 's/test-new-dribble/#&/' \
     -e 's/test-send-recv/#&/' \
     -i tests/Makefile.am
 
+# needed for libnice-0.1.14-tests-koji.patch
+autoreconf -fiv
+
 
 %build
 %configure --enable-compile-warnings=yes --disable-static \
@@ -133,6 +138,9 @@ make check
 
 
 %changelog
+* Fri May 10 2019 Kamil Dudka <kdudka@redhat.com> - 0.1.16-2
+- reintroduce autoreconf in %%prep
+
 * Fri May 10 2019 Stefan Becker <chemobejk@gmail.com> - 0.1.16-1
 - Update to 0.1.16
 - drop all upstream patches