Update fontconfig submodule for https://github.com/mozilla-servo/fontconfig/pull/1

[SimonSapin]

This of course depends on servo/fontconfig#1 being merged.

[hoppipolla-critic-bot]

Critic review: https://critic.hoppipolla.co.uk/r/1172

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[jdm]

r+

[SimonSapin]

@bors: retry

[metajack]

@bors: retry

[jdm]

@bors: retry

[bors-servo]

saw approval from jdm
at SimonSapin@a24e52a

[bors-servo]

merging SimonSapin/servo/fontconfig-compile = a24e52a into auto

[bors-servo]

SimonSapin/servo/fontconfig-compile = a24e52a merged ok, testing candidate = b31b3ce

[bors-servo]

some tests failed:
failure: http://servo-buildbot.pub.build.mozilla.org/builders/linux/builds/1159

[bors-servo]

saw approval from jdm
at SimonSapin@a24e52a

[bors-servo]

saw approval from jdm
at SimonSapin@a24e52a

[bors-servo]

merging SimonSapin/servo/fontconfig-compile = a24e52a into auto

[bors-servo]

SimonSapin/servo/fontconfig-compile = a24e52a merged ok, testing candidate = 384183a

[bors-servo]

all tests pass:
success: http://servo-buildbot.pub.build.mozilla.org/builders/linux/builds/1175
success: http://servo-buildbot.pub.build.mozilla.org/builders/mac/builds/1130

[bors-servo]

fast-forwarding master to auto = 384183a

[jdm]

17:57:09     INFO -  configure: git: submodule update
17:57:11     INFO -  error: You have local changes to '.gitignore'; cannot switch branches.
17:57:11     INFO -  Unable to checkout '0450af3d92f1fb4f269cc64e58647871a5bf7288' in submodule path 'src/platform/linux/fontconfig'
17:57:11     INFO -  configure: error: git

Awkward.

[SimonSapin]

Not sure what happened here. servo/fontconfig#1 was merged hours before you r+’d this, and a fresh clone of https://github.com/mozilla-servo/fontconfig.git definitely contains servo/fontconfig@0450af3 for me.

[SimonSapin]

Ah, this is the relevant part: error: You have local changes to '.gitignore'; cannot switch branches. but I don’t know how to fix it :/

[SimonSapin]

I can not reproduce this locally. I believe the build slave has uncommitted local changes to its fontconfig/.gitignore file.