ci: apk/wget-Fallback für curl korrekt klammern

.gitea/workflows/nightly.yml

@@ -112,10 +112,11 @@ jobs:
 
           # curl installieren (BusyBox wget kann kein DELETE/POST mit Headers)
           if ! command -v curl >/dev/null 2>&1; then
-            apk add --no-cache curl 2>/dev/null || \
+            if ! apk add --no-cache curl 2>/dev/null; then
               wget -qO /usr/local/bin/curl \
-                "https://github.com/moparisthebest/static-curl/releases/download/v8.6.0/curl-amd64" \
-              && chmod +x /usr/local/bin/curl
+                "https://github.com/moparisthebest/static-curl/releases/download/v8.6.0/curl-amd64"
+              chmod +x /usr/local/bin/curl
+            fi
           fi
 
           # Altes Release loeschen falls vorhanden