fix path.sh

examples/aishell/s1/path.sh

@@ -24,5 +24,5 @@ export PATH=${PATH}:${SRILM}/bin:${SRILM}/bin/i686-m64
 export KALDI_ROOT=${MAIN_ROOT}/tools/kaldi
 [ -f $KALDI_ROOT/tools/env.sh ] && . $KALDI_ROOT/tools/env.sh
 export PATH=$PWD/utils/:$KALDI_ROOT/tools/openfst/bin:$PWD:$PATH
-[ ! -f $KALDI_ROOT/tools/config/common_path.sh ] && echo >&2 "The standard file $KALDI_ROOT/tools/config/common_path.sh is not present -> Exit!" && exit 1
-. $KALDI_ROOT/tools/config/common_path.sh
+[ ! -f $KALDI_ROOT/tools/config/common_path.sh ] && echo >&2 "The standard file $KALDI_ROOT/tools/config/common_path.sh is not present -> Exit!"
+. $KALDI_ROOT/tools/config/common_path.sh || true