Fix incorrect endif comment and restore SEASTAR_MODULE definition

- Fixed #endif comment in reactor.cc (should be SEASTAR_HAVE_DPDK not SEASTAR_MODULE)
- Restored SEASTAR_MODULE compile definition which is still needed for SEASTAR_MODULE_EXPORT macros in headers

Co-authored-by: avikivity <[email protected]>

Author: Copilot

src/CMakeLists.txt

@@ -98,6 +98,7 @@ target_compile_definitions (seastar-module
     SEASTAR_API_LEVEL=${Seastar_API_LEVEL}
     SEASTAR_SCHEDULING_GROUPS_COUNT=${Seastar_SCHEDULING_GROUPS_COUNT}
   PRIVATE
+    SEASTAR_MODULE
     ${Seastar_PRIVATE_COMPILE_DEFINITIONS})
 target_compile_options (seastar-module
   PUBLIC

src/core/reactor.cc

@@ -171,7 +171,7 @@
 #include "cgroup.hh"
 #ifdef SEASTAR_HAVE_DPDK
 #include <seastar/core/dpdk_rte.hh>
-#endif // SEASTAR_MODULE
+#endif // SEASTAR_HAVE_DPDK
 #include <seastar/util/assert.hh>
 #include <seastar/core/internal/systemwide_memory_barrier.hh>