tapi32: Stub lineAddProviderW.

include/tapi.h

diff --git a/include/tapi.h b/include/tapi.h
index 9a8cd04..fdb5e9f 100644
--- a/include/tapi.h
+++ b/include/tapi.h
@@ -859,7 +859,9 @@
 
 /* line functions */
 DWORD WINAPI lineAccept(HCALL,LPCSTR,DWORD);
-DWORD WINAPI lineAddProvider(LPCSTR,HWND,LPDWORD);
+DWORD WINAPI lineAddProviderA(LPCSTR,HWND,LPDWORD);
+DWORD WINAPI lineAddProviderW(LPCWSTR,HWND,LPDWORD);
+#define      lineAddProvider WINELIB_NAME_AW(lineAddProvider)
 DWORD WINAPI lineAddToConference(HCALL,HCALL);
 DWORD WINAPI lineAnswer(HCALL,LPCSTR,DWORD);
 DWORD WINAPI lineBlindTransfer(HCALL,LPCSTR,DWORD);
@@ -944,7 +946,6 @@
 DWORD WINAPI lineUnHold(HCALL);
 DWORD WINAPI lineUnpark(HLINE,DWORD,LPHCALL,LPCSTR);
 
-DWORD WINAPI lineAddProviderA(LPCSTR,HWND,LPDWORD);
 DWORD WINAPI lineBlindTransferA(HCALL,LPCSTR,DWORD);
 DWORD WINAPI lineConfigDialogA(DWORD,HWND,LPCSTR);
 DWORD WINAPI lineConfigDialogEditA(DWORD,HWND,LPCSTR,LPVOID const,DWORD,LPVARSTRING);