8224579: ResourceMark not declared in shenandoahRootProcessor.inline.hpp with --disable-precompiled-headers

Reviewed-by: shade
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp
index 4339656..9cae1df 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp
@@ -27,6 +27,7 @@
 #include "gc/shenandoah/shenandoahHeuristics.hpp"
 #include "gc/shenandoah/shenandoahRootProcessor.hpp"
 #include "gc/shenandoah/shenandoahTimingTracker.hpp"
+#include "memory/resourceArea.hpp"
 
 template <typename IsAlive, typename KeepAlive>
 void ShenandoahWeakRoots::oops_do(IsAlive* is_alive, KeepAlive* keep_alive, uint worker_id) {