[glib] (10 commits) ...Merge branch 'cleanup-warnings-split-3' into 'main'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  e8761bb... Fix non-initialized variable and signed/unsigned mismatch i
  499cb2c... Fix non-initialized variable and signed/unsigned mismatch i
  eaf37d6... Fix non-initialized variable in glib/gspawn-win32.c
  51e54f6... Fix global variable name hidden by local variables in glib/
  c118fd5... Fix non-initialized variable in glib/gmarkup.c
  7304e4d... Fix non-initialized variable in glib/giowin32.c
  d5580ed... Fix non-initialized variable in glib/gdatetime.c
  112ad3d... Fix too small array definition in glib/gconvert.c (no room 
  800457e... Fix non-initialized variable in glib/garray.c
  a57c33f... Merge branch 'cleanup-warnings-split-3' into 'main'