fix git grep

.gitea/workflows/gentoo-utils.yml

@@ -193,4 +193,4 @@ jobs:
       - name: grep for patterns
         # negate git grep ret code because 1 means no findings
         run: |
-          git --no-pager grep -E 'todo!|dbg!' -- '*.rs' && exit 1 || exit 0
+          git --no-pager grep -E 'todo!|dbg!' -- '*.rs' && return 1 || return 0