Avoid signed overflow during mult-s16-test which intermittently
failed.

Patch by Mark H Weaver <mhw@netris.org>.

--- pulseaudio-5.0/src/tests/mult-s16-test.c.orig	2014-01-23 13:57:55.000000000 -0500
+++ pulseaudio-5.0/src/tests/mult-s16-test.c	2014-10-24 03:13:46.464661815 -0400
@@ -55,7 +55,7 @@
 START_TEST (mult_s16_test) {
     int16_t samples[SAMPLES];
     int32_t volumes[SAMPLES];
-    int32_t sum1 = 0, sum2 = 0;
+    uint32_t sum1 = 0, sum2 = 0;
     int i;
 
     pa_random(samples, sizeof(samples));
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<tr><td><span title='2019-07-26 19:19:49 +0200'>2019-07-26</span></td><td><a href='/guix/commit/tests/services.scm?id=5c793753b31b1dcd9a554bce953124f7ae88ca9a'>guix system: Add 'reconfigure' module.</a><span class='msg-avail'>...</span></td><td>Jakob L. Kreuze</td></tr>
<tr><td><span title='2019-01-24 20:47:21 +0100'>2019-01-24</span></td><td><a href='/guix/commit/tests/services.scm?id=2c5ee9bba4067fb0a9e68fb2af3a6e7fe36960cb'>tests: Remove duplicate field initializers.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-09-27 23:58:05 +0200'>2018-09-27</span></td><td><a href='/guix/commit/tests/services.scm?id=7fed9353ece5974ff431fa666a530da237a12085'>tests: Adjust services tests to new 'shepherd-service-upgrade'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-09-07 23:00:39 +0200'>2018-09-07</span></td><td><a href='/guix/commit/tests/services.scm?id=9b6c4355645534d1ae799bfef6761b75ed8b3a41'>services: 'instantiate-missing-services' reaches fixed point.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-01-21 00:24:03 +0100'>2018-01-21</span></td><td><a href='/guix/commit/tests/services.scm?id=d466b1fc8221a6224fe7ded53a828f9c29ed9457'>services: Missing services are automatically instantiated.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-11-08 22:31:58 +0100'>2017-11-08</span></td><td><a href='/guix/commit/tests/services.scm?id=49483f71381ad32cdbe81b1c8ed2cc023329cc18'>services: Add 'lookup-service-types'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-04-16 00:48:08 +0200'>2017-04-16</span></td><td><a href='/guix/commit/tests/services.scm?id=1bb895eabf74a1e571887eb1521915e668a5c28d'>services: Service types can now specify a default value for instances.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-04-16 00:48:07 +0200'>2017-04-16</span></td><td><a href='/guix/commit/tests/services.scm?id=efe7d19a9edafb793dca21dcefce89ead3465030'>services: 'service-parameters' becomes 'service-value'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-08-31 15:44:20 +0200'>2016-08-31</span></td><td><a href='/guix/commit/tests/services.scm?id=7b44cae50aed1d6d67337e9eae9f449ccd00a870'>services: shepherd: Add 'shepherd-service-upgrade', from 'guix system'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-08-31 15:44:20 +0200'>2016-08-31</span></td><td><a href='/guix/commit/tests/services.scm?id=a5d78eb64bcb87440a0b3ff25eec5568df0bc47c'>services: shepherd: Add 'shepherd-service-lookup-procedure'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>