patch 7.4.1306
Problem:    Job control doesn't work well on MS-Windows.
Solution:   Various fixes. (Ken Takata, Ozaki Kiichi , Yukihiro Nakadaira,
            Yasuhiro Matsumoto)
diff --git a/src/structs.h b/src/structs.h
index 1ce98d0..8ea43d3 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1249,7 +1249,8 @@
     int		jv_exitval;
 #endif
 #ifdef WIN32
-    PROCESS_INFORMATION	jv_pi;
+    PROCESS_INFORMATION	jv_proc_info;
+    HANDLE		jv_job_object;
 #endif
     jobstatus_T	jv_status;