8365071: ARM32: JFR intrinsic jvm_commit triggers C2 regalloc assert

Reviewed-by: mgronlun

Author: Boris Ulasevich

src/hotspot/share/opto/library_call.cpp

@@ -3275,7 +3275,7 @@ bool LibraryCallKit::inline_native_jvm_commit() {
   lease_compare_io->init_req(_true_path, i_o());
   lease_compare_io->init_req(_false_path, input_io_state);
 
-  lease_result_value->init_req(_true_path, null()); // if the lease was returned, return 0.
+  lease_result_value->init_req(_true_path, _gvn.longcon(0)); // if the lease was returned, return 0L.
   lease_result_value->init_req(_false_path, arg); // if not lease, return new updated position.
 
   RegionNode* result_rgn = new RegionNode(PATH_LIMIT);