fix ci rule to show Shell variables (#22177)

paddle/scripts/paddle_build.sh

@@ -520,15 +520,15 @@ function generate_api_spec() {
 }
 
 function check_approvals_of_unittest() {
-    set +x
     if [ "$GITHUB_API_TOKEN" == "" ] || [ "$GIT_PR_ID" == "" ]; then
         return 0
     fi
     # approval_user_list: XiaoguangHu01 46782768,luotao1 6836917,phlrain 43953930,lanxianghit 47554610, zhouwei25 52485244, kolinwei 22165420
-    approval_line=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews?per_page=10000`
     check_times=$1
-    if [ $1 == 1 ]; then
+    if [ $check_times == 1 ]; then
+        approval_line=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews?per_page=10000`
         APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 22165420 52485244 6836917`
+        set +x
         echo "current pr ${GIT_PR_ID} got approvals: ${APPROVALS}"
         if [ "${APPROVALS}" == "TRUE" ]; then
             echo "==================================="
@@ -536,12 +536,12 @@ function check_approvals_of_unittest() {
             echo "==================================="
             exit 0
         fi
-    elif [ $1 == 2 ]; then
-        set -x
+    elif [ $check_times == 2 ]; then
         unittest_spec_diff=`python ${PADDLE_ROOT}/tools/diff_unittest.py ${PADDLE_ROOT}/paddle/fluid/UNITTEST_DEV.spec ${PADDLE_ROOT}/paddle/fluid/UNITTEST_PR.spec`
-        set +x
         if [ "$unittest_spec_diff" != "" ]; then
+            approval_line=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews?per_page=10000`
             APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 22165420 52485244 6836917`
+            set +x
             echo "current pr ${GIT_PR_ID} got approvals: ${APPROVALS}"
             if [ "${APPROVALS}" == "FALSE" ]; then
                 echo "************************************"
@@ -1209,7 +1209,6 @@ function main() {
         run_mac_test ${PYTHON_ABI:-""} ${PROC_RUN:-1}
         ;;
       maccheck_py35)
-        check_approvals_of_unittest 1
         cmake_gen ${PYTHON_ABI:-""}
         build_mac
         run_mac_test ${PYTHON_ABI:-""} ${PROC_RUN:-1}