fetch2/git: prevent recursion on getting latest revision

We call git ls-remote to get the latest revision from a git repository,
however by calling runfetchcmd() we can end up recursively running
git ls-remote a number of times with OE e.g. if ${SRCPV} is in PV, ${PV}
is in WORKDIR, and ${WORKDIR} is in PATH (as a result of recipe-specific
sysroots), our call to runfetchcmd() exports PATH so _lsremote() will
get called again - with the end result that we run git ls-remote 30
times in quick succession (!). Prevent that from happening by using a
guard variable and returning a dummy value if it's called recursively.

Fixes [YOCTO #11185].

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions