Pacify gcc -Og -Wuninitialized

This addresses the -Og uninitialized variable warnings I ran
into on Fedora 28, which uses 8.1.1 20180712 (Red Hat 8.1.1-5).
It also changes some explicit initializations to UNINIT
when the variable does not actually need to be initialized.
* src/process.c (connect_network_socket):
* src/sysdep.c (system_process_attributes):
* src/xfns.c (x_real_pos_and_offsets):
* src/xterm.c (get_current_wm_state) [USE_XCB]:
Add UNINIT.
* src/editfns.c (tzlookup):
* src/fns.c (Fnconc):
* src/font.c (font_parse_fcname):
* src/frame.c (x_set_frame_parameters):
Prefer UNINIT to explicit initialization.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/editfns.c b/src/editfns.c
index 71eb2a88090..d2281d7e81c 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -174,7 +174,7 @@ tzlookup (Lisp_Object zone, bool settz)
       else if (plain_integer || (CONSP (zone) && FIXNUMP (XCAR (zone))
                                  && CONSP (XCDR (zone))))
         {
-          Lisp_Object abbr = Qnil;
+          Lisp_Object abbr UNINIT;
           if (!plain_integer)
             {
               abbr = XCAR (XCDR (zone));