fix git grep

.gitea/workflows/gentoo-utils.yml

@@ -191,11 +191,9 @@ jobs:
         uses: actions/checkout@v5
 
       - name: grep for patterns
-        # negate git grep ret code because 1 means no findings
         run: |
-          if git --no-pager grep -E 'todo!|dbg!' -- '*.rs'; then
-            exit 0
-          else
-            exit 1
-          fi
-          
+          set -x
+          git --no-pager grep -E 'todo!|dbg!' -- '*.rs'
+          retcode=$?
+          echo "retcode=$?"
+          (( $retcode )) && echo "exit 1" || echo "exit 0"