[yelp] (16 commits) Non-fast-forward update to branch wip/exalm/flatpak

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/flatpak' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  21840a1... flatpak: Add flatpak manifest

Commits added to the branch:

  48bb6d9... Add G_GNUC_PRINTF attribute to yelp_debug() (*)
  e7f03bf... Check whether document has a root element before accessing  (*)
  4529245... Check whether the index variable is valid before dereferenc (*)
  14d995e... Check whether variable node is set before dereferencing it (*)
  f97cc50... Fix a use of an uninitialized variable (*)
  9252d10... Check whether the index variable is valid before dereferenc (*)
  6b05dd2... Check whether parser is null before dereferencing it (*)
  8b2fab2... Avoid possible overrun while comparing to MAN_FONTS (*)
  6ad30ce... Increase the size of string variables passed to sscanf (*)
  0b3b23c... Initialize ws_start variable before returning it (*)
  cbf737e... Swap the if() checks to avoid possible null pointer derefer (*)
  9847b43... Check the strstr() return value before using it (*)
  538e86c... Check variable before dereferencing it (*)
  e34c6ab... Remove unused variable (*)
  2f3aea4... Remove the unused encoding and language code from YelpManDo (*)
  dfb8918... flatpak: Add flatpak manifest

(*) This commit already existed in another branch; no separate mail sent