scripts: strip leading './' when searching MAINTAINERS file

The following two uses of get_maintainer.pl should return the same results, but do not: $ ./scripts/get_maintainer.pl -f ./hw/net/vmxnet3.c get_maintainer.pl: No maintainers found, printing recent contributors. get_maintainer.pl: Do not blindly cc: them on patches! Use common sense. "Philippe Mathieu-Daudé" <philmd@linaro.org> (commit_signer:4/7=57%) "Michael S. Tsirkin" <mst@redhat.com> (commit_signer:4/7=57%) Xiaoyao Li <xiaoyao.li@intel.com> (commit_signer:3/7=43%) Thomas Huth <thuth@redhat.com> (commit_signer:3/7=43%) Zhao Liu <zhao1.liu@intel.com> (commit_signer:3/7=43%) qemu-devel@nongnu.org (open list:All patches CC here) $ ./scripts/get_maintainer.pl -f hw/net/vmxnet3.c Dmitry Fleytman <dmitry.fleytman@gmail.com> (maintainer:VMware) Jason Wang <jasowang@redhat.com> (odd fixer:Network devices) qemu-devel@nongnu.org (open list:All patches CC here) In the former case, the leading "./" needs to be removed before trying to find a filename match. Blindly stripping the "./" is valid because the script already enforces that it is run from the QEMU git root directory, so canonicalizing the filename vs $CWD is not required. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20260511093858.82753-1-berrange@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>