msvcp110: Add _Mtx_clear_owner implementation.

dlls/msvcp110/msvcp110.spec

@@ -3817,7 +3817,7 @@
 @ extern _LZero
 @ cdecl _Lock_shared_ptr_spin_lock()
 @ cdecl _Mbrtowc(ptr ptr long ptr ptr)
-@ stub _Mtx_clear_owner
+@ cdecl _Mtx_clear_owner(ptr)
 @ cdecl _Mtx_current_owns(ptr)
 @ cdecl _Mtx_destroy(ptr)
 @ cdecl _Mtx_getconcrtcs(ptr)

dlls/msvcp120/msvcp120.spec

@@ -3762,7 +3762,7 @@
 @ extern _LZero
 @ cdecl _Lock_shared_ptr_spin_lock()
 @ cdecl _Mbrtowc(ptr ptr long ptr ptr)
-@ stub _Mtx_clear_owner
+@ cdecl _Mtx_clear_owner(ptr)
 @ cdecl _Mtx_current_owns(ptr)
 @ cdecl _Mtx_destroy(ptr)
 @ cdecl _Mtx_getconcrtcs(ptr)

dlls/msvcp120_app/msvcp120_app.spec

@@ -3762,7 +3762,7 @@
 @ extern _LZero msvcp120._LZero
 @ cdecl _Lock_shared_ptr_spin_lock() msvcp120._Lock_shared_ptr_spin_lock
 @ cdecl _Mbrtowc(ptr ptr long ptr ptr) msvcp120._Mbrtowc
-@ stub _Mtx_clear_owner
+@ cdecl _Mtx_clear_owner(ptr) msvcp120._Mtx_clear_owner
 @ cdecl _Mtx_current_owns(ptr) msvcp120._Mtx_current_owns
 @ cdecl _Mtx_destroy(ptr) msvcp120._Mtx_destroy
 @ cdecl _Mtx_getconcrtcs(ptr) msvcp120._Mtx_getconcrtcs

dlls/msvcp140/msvcp140.spec

@@ -3672,18 +3672,18 @@
 @ cdecl _Lstat(wstr ptr)
 @ cdecl _Make_dir(wstr) tr2_sys__Make_dir_wchar
 @ cdecl _Mbrtowc(ptr ptr long ptr ptr)
-@ stub _Mtx_clear_owner
-@ cdecl _Mtx_current_owns(ptr) _Mtx_current_owns
-@ cdecl _Mtx_destroy(ptr) _Mtx_destroy
-@ cdecl _Mtx_destroy_in_situ(ptr) _Mtx_destroy_in_situ
-@ cdecl _Mtx_getconcrtcs(ptr) _Mtx_getconcrtcs
-@ cdecl _Mtx_init(ptr long) _Mtx_init
-@ cdecl _Mtx_init_in_situ(ptr long) _Mtx_init_in_situ
-@ cdecl _Mtx_lock(ptr) _Mtx_lock
+@ cdecl _Mtx_clear_owner(ptr)
+@ cdecl _Mtx_current_owns(ptr)
+@ cdecl _Mtx_destroy(ptr)
+@ cdecl _Mtx_destroy_in_situ(ptr)
+@ cdecl _Mtx_getconcrtcs(ptr)
+@ cdecl _Mtx_init(ptr long)
+@ cdecl _Mtx_init_in_situ(ptr long)
+@ cdecl _Mtx_lock(ptr)
 @ stub _Mtx_reset_owner
 @ stub _Mtx_timedlock
-@ cdecl _Mtx_trylock(ptr) _Mtx_trylock
-@ cdecl _Mtx_unlock(ptr) _Mtx_unlock
+@ cdecl _Mtx_trylock(ptr)
+@ cdecl _Mtx_unlock(ptr)
 @ stub _Mtxdst
 @ stub _Mtxinit
 @ stub _Mtxlock

dlls/msvcp90/misc.c

@@ -807,6 +807,13 @@ critical_section* __cdecl _Mtx_getconcrtcs(_Mtx_arg_t mtx)
     return &MTX_T_FROM_ARG(mtx)->cs;
 }
 
+void __cdecl _Mtx_clear_owner(_Mtx_arg_t mtx)
+{
+    _Mtx_t m = MTX_T_FROM_ARG(mtx);
+    m->thread_id = -1;
+    m->count--;
+}
+
 static inline LONG interlocked_dec_if_nonzero( LONG *dest )
 {
     LONG val, tmp;

dlls/msvcp_win/msvcp_win.spec

@@ -3672,7 +3672,7 @@
 @ cdecl _Lstat(wstr ptr) msvcp140._Lstat
 @ cdecl _Make_dir(wstr) msvcp140._Make_dir
 @ cdecl _Mbrtowc(ptr ptr long ptr ptr) msvcp140._Mbrtowc
-@ stub _Mtx_clear_owner
+@ cdecl _Mtx_clear_owner(ptr) msvcp140._Mtx_clear_owner
 @ cdecl _Mtx_current_owns(ptr) msvcp140._Mtx_current_owns
 @ cdecl _Mtx_destroy(ptr) msvcp140._Mtx_destroy
 @ cdecl _Mtx_destroy_in_situ(ptr) msvcp140._Mtx_destroy_in_situ