Ignore git config errors that may occur in enter_chroot.

enter_chroot.sh

Index: enter_chroot.sh
diff --git a/enter_chroot.sh b/enter_chroot.sh
index 973d1980490a19929d441983a2b9f86d45bf5aa1..b3da25f34dc637da85a6d3402cf15713f01b3709 100755
--- a/enter_chroot.sh
+++ b/enter_chroot.sh
@@ -44,8 +44,6 @@ DEFINE_string chrome_root "" \
 DEFINE_string chrome_root_mount "/home/$USER/chrome_root" \
   "The mount point of the chrome broswer source in the chroot."
 
-DEFINE_boolean git_config $FLAGS_TRUE \
-  "Config git to work with your user/pass in the chroot."
 DEFINE_boolean official_build $FLAGS_FALSE \
   "Set CHROMEOS_OFFICIAL=1 for release builds."
 DEFINE_boolean mount $FLAGS_FALSE "Only set up mounts."
@@ -362,13 +360,13 @@ if [ -d "$HOME/.subversion" ]; then
 fi
 
 # Configure committer username and email in chroot .gitconfig
-if [ $FLAGS_git_config -eq $FLAGS_TRUE ]; then
-  git config -f ${FLAGS_chroot}/home/${USER}/.gitconfig --replace-all \
-    user.name "$(cd /tmp; git var GIT_COMMITTER_IDENT | sed -e 's/ *<.*//')"
-  git config -f ${FLAGS_chroot}/home/${USER}/.gitconfig --replace-all \
-    user.email "$(cd /tmp; git var GIT_COMMITTER_IDENT | \
-      sed -e 's/.*<\([^>]*\)>.*/\1/')"
-fi
+git config -f ${FLAGS_chroot}/home/${USER}/.gitconfig --replace-all \
+  user.name "$(cd /tmp; git var GIT_COMMITTER_IDENT | sed -e 's/ *<.*//')" ||
+    true
+git config -f ${FLAGS_chroot}/home/${USER}/.gitconfig --replace-all \
+  user.email "$(cd /tmp; git var GIT_COMMITTER_IDENT | \
+    sed -e 's/.*<\([^>]*\)>.*/\1/')" ||
+      true
 
 # Run command or interactive shell.  Also include the non-chrooted path to
 # the source trunk for scripts that may need to print it (e.g.