--- a/src/hotspot/share/gc/g1/g1OopClosures.cpp	Wed Oct 31 13:43:57 2018 +0100
+++ b/src/hotspot/share/gc/g1/g1OopClosures.cpp	Wed Oct 31 13:43:57 2018 +0100
@@ -38,7 +38,7 @@
 { }
 
 G1ScanClosureBase::G1ScanClosureBase(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state) :
-  _g1h(g1h), _par_scan_state(par_scan_state), _from(NULL)
+  _g1h(g1h), _par_scan_state(par_scan_state)
 { }
 
 void G1CLDScanClosure::do_cld(ClassLoaderData* cld) {