ntdll: Don't use WINAPI for KeUserModeCallback().

dlls/ntdll/unix/signal_arm.c

@@ -1206,7 +1206,7 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return,
 /***********************************************************************
  *           KeUserModeCallback
  */
-NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
+NTSTATUS KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
 {
     struct syscall_frame *frame = arm_thread_data()->syscall_frame;
     void *args_data = (void *)((frame->sp - len) & ~15);

dlls/ntdll/unix/signal_arm64.c

@@ -1159,7 +1159,7 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return,
 /***********************************************************************
  *           KeUserModeCallback
  */
-NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
+NTSTATUS KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
 {
     struct syscall_frame *frame = arm64_thread_data()->syscall_frame;
     void *args_data = (void *)((frame->sp - len) & ~15);

dlls/ntdll/unix/signal_i386.c

@@ -1652,7 +1652,7 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return,
 /***********************************************************************
  *           KeUserModeCallback
  */
-NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
+NTSTATUS KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
 {
     struct syscall_frame *frame = x86_thread_data()->syscall_frame;
     void *args_data = (void *)((frame->esp - len) & ~15);

dlls/ntdll/unix/signal_x86_64.c

@@ -1668,7 +1668,7 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return,
 /***********************************************************************
  *           KeUserModeCallback
  */
-NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
+NTSTATUS KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
 {
     struct syscall_frame *frame = amd64_thread_data()->syscall_frame;
     void *args_data = (void *)((frame->rsp - len) & ~15);

include/wine/unixlib.h

@@ -81,7 +81,7 @@ extern void ntdll_set_exception_jmp_buf( __wine_jmp_buf *jmp );
          } \
     } while (0);
 
-NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len );
+NTSTATUS KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len );
 
 /* wide char string functions */