[mutter] (13 commits) Created branch wip/carlosg/coverity-fixes

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/coverity-fixes' was created.

Summary of new commits:

  05a7c4d... core: Drop repeated early return condition in function
  3298d34... core: Drop code to do edge resistance on timeouts
  0c88ccb... compositor: Remove dead code
  3f74c6e... cogl: Fix broken check for COGL_DISABLE_GL_EXTENSION envvar
  50c074c... clutter: Turn warning into assert
  acf5e31... backends/x11: Fix off by one in debug output
  c50e1d3... cogl: Plug GString leak
  2e60804... x11: Drop fallback on ~/.mutter paths
  8dcaff4... cogl: Plug possible GString leaks
  ff18e93... cogl: Plug leak on error path
  5e304c3... wayland: Plug leak in error condition
  4ef365b... cogl: Plug leak in error path
  c26c2ac... clutter: Plug leak on error condition