...similar to d3f2c61e "Make Jenkins
linux_gcc_release_64 pick up Developer Toolset 7":

> /lo/home/tdf/lode/jenkins/workspace/lo_daily_update_gandalf/sal/osl/unx/pipe.cxx: In function ‘oslPipeImpl* osl_psz_createPipe(const sal_Char*, oslPipeOptions, oslSecurity)’:
> /lo/home/tdf/lode/jenkins/workspace/lo_daily_update_gandalf/sal/osl/unx/pipe.cxx:248:12: error: ‘char* strncpy(char*, const char*, size_t)’ output may be truncated copying 107 bytes from a string of length 4096 [-Werror=stringop-truncation]
>      strncpy(addr.sun_path, name, sizeof(addr.sun_path) - 1);
>      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

(<https://ci.libreoffice.org/job/lo_daily_update_gandalf/558/>).

Change-Id: I443337969dfdcd02a350a171e68d5032b5be22a0