test: update mutation-battery anchors after rustfmt reflow

Formatting reflowed two mutation target lines onto multiple lines; update
the battery anchors (adapter #14 kit lookup, host #19 Content-Length push)
to the new unique substrings. Both batteries kill all mutants again
(adapter 14/14, host 20/20).

openfut-adapter-fifa17/mutation-battery.sh

@@ -98,7 +98,7 @@ kill_test 13 "extension schema version ignored on read" \
 
 kill_test 14 "player state keyed by CardDefinitionId not OwnedItemId" \
   two_owned_copies_of_one_definition_project_as_distinct_players "$FUT/squad_projection.rs" \
-  'ext.kit_numbers.get(&slot.owned_card_id)' 'ext.kit_numbers.get(&item.card_id)'
+  '.get(&slot.owned_card_id)' '.get(&item.card_id)'
 
 echo "== mutants killed: $PASS / $((PASS+FAIL)) =="
 if [ "$FAIL" -ne 0 ]; then

openfut-utas-host/mutation-battery.sh

@@ -125,8 +125,8 @@ kill_test 18 "duplicate definition collapses owned instances (adapter shaper)" \
 
 kill_test 19 "Content-Length left stale after overlay" \
   coupled_read_after_write_list_and_usermassinfo_agree "$H" \
-  'resp.headers.push(("Content-Length".to_string(), body.len().to_string()));' \
-  'resp.headers.push(("Content-Length".to_string(), "0".to_string()));'
+  '("Content-Length".to_string(), body.len().to_string())' \
+  '("Content-Length".to_string(), "0".to_string())'
 
 kill_test 20 "Python squad silently used after Rust projection failure" \
   usermassinfo_never_serves_python_squad_on_integrity_failure "$H" \