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 Job ID Name Coverage
  Docker Image
passed #2534388
debian-testing

00:00:39

 
  Build And Test
passed #2534389
autotools

00:05:18

passed #2534390
meson

00:02:20

passed #2534391
meson-noglamor

00:01:17