[Bug 36609] valgrind shows uninitialized memory use in wscript/tests/run.c

https://bugs.winehq.org/show_bug.cgi?id=36609

--- Comment #1 from Austin English  ---
Also:

==9417== Thread 5:
==9417== Syscall param writev(vector[...]) points to uninitialised byte(s)
==9417==    at 0x433804F: ??? (syscall-template.S:84)
==9417==    by 0x7BC8946B: send_request (server.c:228)
==9417==    by 0x7BC89626: wine_server_call (server.c:309)
==9417==    by 0x7BC4867A: server_write_file (file.c:624)
==9417==    by 0x7BC49E71: NtWriteFile (file.c:1238)
==9417==    by 0x53D4332: rpcrt4_conn_np_write (rpc_transport.c:414)
==9417==    by 0x53C9242: rpcrt4_conn_write (rpc_binding.h:196)
==9417==    by 0x53CB001: RPCRT4_SendWithAuth (rpc_message.c:849)
==9417==    by 0x53CC050: RPCRT4_Send (rpc_message.c:1248)
==9417==    by 0x53CF275: process_request_packet (rpc_server.c:462)
==9417==    by 0x53CF553: RPCRT4_process_packet (rpc_server.c:517)
==9417==    by 0x53CF6B9: RPCRT4_worker_thread (rpc_server.c:539)
==9417==    by 0x7BC9E2D7: process_rtl_work_item (threadpool.c:349)
==9417==    by 0x7BCA2224: threadpool_worker_proc (threadpool.c:2112)
==9417==    by 0x7BC913B3: ??? (signal_i386.c:2700)
==9417==    by 0x7BC9143B: call_thread_func (signal_i386.c:2759)
==9417==    by 0x7BC91391: ??? (signal_i386.c:2700)
==9417==    by 0x7BC9B3EE: start_thread (thread.c:487)
==9417==    by 0x4244249: start_thread (pthread_create.c:333)
==9417==    by 0x433FD6D: clone (clone.S:114)
==9417==  Address 0x48eeb9c is 44 bytes inside a block of size 92 alloc'd
==9417==    at 0x7BC51061: notify_alloc (heap.c:254)
==9417==    by 0x7BC5554F: RtlAllocateHeap (heap.c:1716)
==9417==    by 0x53CAE79: RPCRT4_SendWithAuth (rpc_message.c:808)
==9417==    by 0x53CC050: RPCRT4_Send (rpc_message.c:1248)
==9417==    by 0x53CF275: process_request_packet (rpc_server.c:462)
==9417==    by 0x53CF553: RPCRT4_process_packet (rpc_server.c:517)
==9417==    by 0x53CF6B9: RPCRT4_worker_thread (rpc_server.c:539)
==9417==    by 0x7BC9E2D7: process_rtl_work_item (threadpool.c:349)
==9417==    by 0x7BCA2224: threadpool_worker_proc (threadpool.c:2112)
==9417==    by 0x7BC913B3: ??? (signal_i386.c:2700)
==9417==    by 0x7BC9143B: call_thread_func (signal_i386.c:2759)
==9417==    by 0x7BC91391: ??? (signal_i386.c:2700)
==9417==    by 0x7BC9B3EE: start_thread (thread.c:487)
==9417==    by 0x4244249: start_thread (pthread_create.c:333)
==9417==    by 0x433FD6D: clone (clone.S:114)
==9417==  Uninitialised value was created by a client request
==9417==    at 0x7BC50E23: mark_block_uninitialized (heap.c:208)
==9417==    by 0x7BC50FB1: initialize_block (heap.c:239)
==9417==    by 0x7BC5556F: RtlAllocateHeap (heap.c:1717)
==9417==    by 0x4B6B42B: IMalloc_fnAlloc (ifs.c:187)
==9417==    by 0x4B6BCCB: IMalloc_Alloc (objidl.h:1405)
==9417==    by 0x4B6BCCB: CoTaskMemAlloc (???:0)
==9417==    by 0x4BADB6E: RemUnknown_RemQueryInterface (stubmanager.c:716)
==9417==    by 0x4BB7274: IRemUnknown_RemQueryInterface_Stub (dcom_p.c:369)
==9417==    by 0x539F358: CStdStubBuffer_Invoke (cstub.c:478)
==9417==    by 0x4B8A26E: IRpcStubBuffer_Invoke (objidl.h:7878)
==9417==    by 0x4B8A26E: RPC_ExecuteCall (???:0)
==9417==    by 0x4B8A6D8: dispatch_rpc (rpc.c:1503)
==9417==    by 0x53CF03A: process_request_packet (rpc_server.c:439)
==9417==    by 0x53CF553: RPCRT4_process_packet (rpc_server.c:517)
==9417==    by 0x53CF6B9: RPCRT4_worker_thread (rpc_server.c:539)
==9417==    by 0x7BC9E2D7: process_rtl_work_item (threadpool.c:349)
==9417==    by 0x7BCA2224: threadpool_worker_proc (threadpool.c:2112)
==9417==    by 0x7BC913B3: ??? (signal_i386.c:2700)
==9417==    by 0x7BC9143B: call_thread_func (signal_i386.c:2759)
==9417==    by 0x7BC91391: ??? (signal_i386.c:2700)
==9417==    by 0x7BC9B3EE: start_thread (thread.c:487)
==9417==    by 0x4244249: start_thread (pthread_create.c:333)
==9417==