ma-chat: Fix a memory leak

7 jobs for master in 9 minutes and 20 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #359735
librem5
build-pureos-gcc-byzantium

00:01:40

 
  Test
passed #359737
librem5
check-po

00:00:18

passed #359736
librem5
test:debian-gcc

00:01:32

23.1%
 
  Package
passed #359738
librem5
package-pureos-byzantium

00:01:45

passed #359739
librem5:arm64
package-pureos-byzantium:arm64

00:06:08

 
  Test Package
passed #359740
librem5
autopkgtest-pureos-byzantium-package

00:01:20

passed #359741
librem5
lintian-pureos-byzantium-package

00:00:43