ntdll: Allocate TEB FLS data in LdrInitializeThunk().

dlls/kernel32/tests/loader.c

@@ -2629,8 +2629,7 @@ todo_wine
             SetLastError(0xdeadbeef);
             value = pFlsGetValue(fls_index);
             ok(!value, "FlsGetValue returned %p, expected NULL\n", value);
-            todo_wine
-                ok(GetLastError() == ERROR_SUCCESS, "FlsGetValue failed with error %u\n", GetLastError());
+            ok(GetLastError() == ERROR_SUCCESS, "FlsGetValue failed with error %u\n", GetLastError());
             ret = pFlsSetValue(fls_index, (void*) 0x31415);
             ok(ret, "FlsSetValue failed\n");
             fls_count++;

dlls/ntdll/loader.c

@@ -3511,6 +3511,8 @@ void WINAPI LdrInitializeThunk( CONTEXT *context, ULONG_PTR unknown2, ULONG_PTR
     InsertHeadList( &tls_links, &NtCurrentTeb()->TlsLinks );
     RtlReleasePebLock();
 
+    NtCurrentTeb()->FlsSlots = fls_alloc_data();
+
     if (!attach_done)  /* first time around */
     {
         attach_done = 1;

dlls/ntdll/ntdll_misc.h

@@ -129,5 +129,6 @@ static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
 
 /* FLS data */
 extern void init_global_fls_data(void) DECLSPEC_HIDDEN;
+extern TEB_FLS_DATA *fls_alloc_data(void) DECLSPEC_HIDDEN;
 
 #endif

dlls/ntdll/thread.c

@@ -294,7 +294,7 @@ static unsigned int fls_chunk_index_from_index( unsigned int index, unsigned int
     return chunk_index;
 }
 
-static TEB_FLS_DATA * fls_alloc_data(void)
+TEB_FLS_DATA *fls_alloc_data(void)
 {
     TEB_FLS_DATA *fls;