revocation: Enforce a (configurable) timeout when fetching OCSP/CRL

Malicious servers could otherwise block the fetching thread indefinitely
after the initial TCP handshake (which has a default timeout of 10s
in the curl and winhttp plugins, the soup plugin actually has a default
overall timeout of 10s).

src/frontends/android/app/src/main/jni/libandroidbridge/backend/android_fetcher.c

@@ -134,6 +134,11 @@ METHOD(fetcher_t, set_option, bool,
 			this->request_type = strdup(va_arg(args, char*));
 			break;
 		}
+		case FETCH_TIMEOUT:
+		{
+			/* we already enforce a 10s timeout */
+			break;
+		}
 		default:
 			supported = FALSE;
 			break;