Comment 2 for bug 921781

StacktraceTop:
 ?? ()
 ?? ()
 __libc_fork () at ../nptl/sysdeps/unix/sysv/linux/x86_64/../fork.c:170
 fork_exec_with_pipes (intermediate_child=1, working_directory=0x0, argv=0x488e4a0, envp=0x3665ef0, close_descriptors=1, search_path=1, stdout_to_null=0, stderr_to_null=0, child_inherits_stdin=0, file_and_argv_zero=0, child_setup=0x7f7ea0af3b40 <child_setup>, user_data=0x7fff24fd62f0, child_pid=0x7fff24fd631c, standard_input=0x0, standard_output=0x0, standard_error=0x0, error=0x7fff24fd63b0) at /build/buildd/glib2.0-2.31.12/./glib/gspawn.c:1232
 g_spawn_async_with_pipes (working_directory=<optimized out>, argv=<optimized out>, envp=<optimized out>, flags=<optimized out>, child_setup=<optimized out>, user_data=<optimized out>, child_pid=0x7fff24fd631c, standard_input=0x0, standard_output=0x0, standard_error=0x0, error=0x7fff24fd63b0) at /build/buildd/glib2.0-2.31.12/./glib/gspawn.c:653