windowscodecs: Remove DECLSPEC_HIDDEN usage.

dlls/windowscodecs/bitmap.c

@@ -667,7 +667,7 @@ static ULONG WINAPI IMILUnknown1Impl_Release(IMILUnknown1 *iface)
 }
 
 DEFINE_THISCALL_WRAPPER(IMILUnknown1Impl_unknown1, 8)
-DECLSPEC_HIDDEN void __thiscall IMILUnknown1Impl_unknown1(IMILUnknown1 *iface, void *arg)
+void __thiscall IMILUnknown1Impl_unknown1(IMILUnknown1 *iface, void *arg)
 {
     FIXME("(%p,%p): stub\n", iface, arg);
 }
@@ -679,7 +679,7 @@ static HRESULT WINAPI IMILUnknown1Impl_unknown2(IMILUnknown1 *iface, void *arg1,
 }
 
 DEFINE_THISCALL_WRAPPER(IMILUnknown1Impl_unknown3, 8)
-DECLSPEC_HIDDEN HRESULT __thiscall IMILUnknown1Impl_unknown3(IMILUnknown1 *iface, void *arg)
+HRESULT __thiscall IMILUnknown1Impl_unknown3(IMILUnknown1 *iface, void *arg)
 {
     FIXME("(%p,%p): stub\n", iface, arg);
     return E_NOTIMPL;
@@ -710,7 +710,7 @@ static HRESULT WINAPI IMILUnknown1Impl_unknown7(IMILUnknown1 *iface, void *arg)
 }
 
 DEFINE_THISCALL_WRAPPER(IMILUnknown1Impl_unknown8, 4)
-DECLSPEC_HIDDEN HRESULT __thiscall IMILUnknown1Impl_unknown8(IMILUnknown1 *iface)
+HRESULT __thiscall IMILUnknown1Impl_unknown8(IMILUnknown1 *iface)
 {
     FIXME("(%p): stub\n", iface);
     return E_NOTIMPL;

dlls/windowscodecs/main.c

@@ -30,7 +30,7 @@
 
 #include "wine/debug.h"
 
-extern BOOL WINAPI WIC_DllMain(HINSTANCE, DWORD, LPVOID) DECLSPEC_HIDDEN;
+extern BOOL WINAPI WIC_DllMain(HINSTANCE, DWORD, LPVOID);
 
 HMODULE windowscodecs_module = 0;
 

dlls/windowscodecs/regsvr.c

@@ -2270,8 +2270,8 @@ static HRESULT unregister_categories(const struct regsvr_category *list)
     return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK;
 }
 
-extern HRESULT WINAPI WIC_DllRegisterServer(void) DECLSPEC_HIDDEN;
-extern HRESULT WINAPI WIC_DllUnregisterServer(void) DECLSPEC_HIDDEN;
+extern HRESULT WINAPI WIC_DllRegisterServer(void);
+extern HRESULT WINAPI WIC_DllUnregisterServer(void);
 
 HRESULT WINAPI DllRegisterServer(void)
 {

dlls/windowscodecs/ungif.h

@@ -144,9 +144,9 @@ typedef int (*InputFunc) (GifFileType *, GifByteType *, int);
 #define APPLICATION_EXT_FUNC_CODE 0xff    /* application block */
 
 /* public interface to ungif.c */
-int DGifSlurp(GifFileType * GifFile) DECLSPEC_HIDDEN;
-GifFileType *DGifOpen(void *userPtr, InputFunc readFunc) DECLSPEC_HIDDEN;
-int DGifCloseFile(GifFileType * GifFile) DECLSPEC_HIDDEN;
+int DGifSlurp(GifFileType * GifFile);
+GifFileType *DGifOpen(void *userPtr, InputFunc readFunc);
+int DGifCloseFile(GifFileType * GifFile);
 
 #define D_GIF_ERR_OPEN_FAILED    101    /* And DGif possible errors. */
 #define D_GIF_ERR_READ_FAILED    102