riched20/tests: Move the itextServicesStdcallVtbl definition to avoid a compiler warning.

dlls/riched20/tests/txtsrv.c

@@ -39,6 +39,7 @@ static HMODULE hmoduleRichEdit;
 /* Use a special table for x86 machines to convert the thiscall
  * calling convention.  This isn't needed on other platforms. */
 #ifdef __i386__
+static ITextServicesVtbl itextServicesStdcallVtbl;
 #define TXTSERV_VTABLE(This) (&itextServicesStdcallVtbl)
 #else /* __i386__ */
 #define TXTSERV_VTABLE(This) (This)->lpVtbl
@@ -441,8 +442,6 @@ static HRESULT WINAPI ITextHostImpl_TxGetSelectionBarWidth(ITextHost *iface,
     return E_NOTIMPL;
 }
 
-static ITextServicesVtbl itextServicesStdcallVtbl;
-
 static ITextHostVtbl itextHostVtbl = {
     ITextHostImpl_QueryInterface,
     ITextHostImpl_AddRef,