Fix build with gcc 9.3.0's -Werror=alloc-size-larger-than=

4 jobs for gcc-9.3.0 in 5 minutes and 58 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Docker Image
passed debian-testing #2534388

00:00:39

 
  Build And Test
passed autotools #2534389

00:05:18

passed meson #2534390

00:02:20

passed meson-noglamor #2534391

00:01:17