Add the 'restrict' qualifier to match the 'gettimeofday' declaration found
in glibc 2.31.

--- datefudge-1.23/datefudge.c	2020-02-17 22:35:21.343341725 +0100
+++ datefudge-1.23/datefudge.c	2020-02-17 22:35:49.619117874 +0100
@@ -78,6 +78,6 @@
     return 0;
 }
 
-int gettimeofday(struct timeval *x, struct timezone *y) {
+int gettimeofday(struct timeval *restrict x, void *restrict y) {
     return __gettimeofday(x,y);
 }
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<tr><td><span title='2020-11-12 09:23:27 -0500'>2020-11-12</span></td><td><a href='/guix/commit/build-aux/update-guix-package.scm?id=3de898b43c1388a9244bdedd2d9f11511c9571d2'>maint: update-guix-package: Optionally add sources to store.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-10-25 15:14:31 -0400'>2020-10-25</span></td><td><a href='/guix/commit/build-aux/update-guix-package.scm?id=13a3b9c748a80c0d4c79450e479416480273d2f7'>maint: update-guix-package: Include the git.sv.gnu.org alias.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-10-19 14:02:53 -0400'>2020-10-19</span></td><td><a href='/guix/commit/build-aux/update-guix-package.scm?id=5800d2aae2490f4192823323b72d17f2645aeb9e'>maint: update-guix-package: Prevent accidentally breaking guix pull.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>