fix git grep

.gitea/workflows/gentoo-utils.yml

@@ -4,7 +4,7 @@ on: [push]
 
 defaults:
   run:
-    shell: bash -l {0}
+    shell: bash -el {0}
 
 jobs:
   build-oci-image:
@@ -193,4 +193,9 @@ 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
+          if ! git --no-pager grep -E 'todo!|dbg!' -- '*.rs'; then
+            exit 0
+          else
+            exit 1
+          fi
+