Get rid of some warnings: -Wunused-result
modules/module-default-device-restore.c: In function ‘load’:
modules/module-default-device-restore.c:67: warning: ignoring return value of ‘fgets’,
declared with attribute warn_unused_result [-Wunused-result]
modules/module-default-device-restore.c:88: warning: ignoring return value of ‘fgets’,
declared with attribute warn_unused_result [-Wunused-result]
pulsecore/authkey.c: In function ‘generate’:
pulsecore/authkey.c:58: warning: ignoring return value of ‘ftruncate’,
declared with attribute warn_unused_result [-Wunused-result]
pulsecore/core-util.c: In function ‘pa_make_secure_dir’:
pulsecore/core-util.c:261: warning: ignoring return value of ‘fchown’,
declared with attribute warn_unused_result [-Wunused-result]