Added stub for RegisterServiceCtrlHandlerEx{A,W}.

dlls/advapi32/advapi32.spec

@@ -522,8 +522,8 @@
 @ stdcall RegisterEventSourceW(ptr ptr)
 # @ stub RegisterIdleTask
 @ stdcall RegisterServiceCtrlHandlerA (ptr ptr)
-# @ stub RegisterServiceCtrlHandlerExA
-# @ stub RegisterServiceCtrlHandlerExW
+@ stdcall RegisterServiceCtrlHandlerExA(str ptr ptr)
+@ stdcall RegisterServiceCtrlHandlerExW(wstr ptr ptr)
 @ stdcall RegisterServiceCtrlHandlerW (ptr ptr)
 @ stdcall RegisterTraceGuidsA(ptr ptr ptr long ptr str str ptr)
 @ stdcall RegisterTraceGuidsW(ptr ptr ptr long ptr wstr wstr ptr)

dlls/advapi32/service.c

@@ -2229,3 +2229,17 @@ BOOL WINAPI SetServiceBits( SERVICE_STATUS_HANDLE hServiceStatus,
           bSetBitsOn, bUpdateImmediately);
     return TRUE;
 }
+
+SERVICE_STATUS_HANDLE WINAPI RegisterServiceCtrlHandlerExA( LPCSTR lpServiceName,
+        LPHANDLER_FUNCTION_EX lpHandlerProc, LPVOID lpContext )
+{
+    FIXME("%s %p %p\n", debugstr_a(lpServiceName), lpHandlerProc, lpContext);
+    return 0;
+}
+
+SERVICE_STATUS_HANDLE WINAPI RegisterServiceCtrlHandlerExW( LPCWSTR lpServiceName,
+        LPHANDLER_FUNCTION_EX lpHandlerProc, LPVOID lpContext )
+{
+    FIXME("%s %p %p\n", debugstr_w(lpServiceName), lpHandlerProc, lpContext);
+    return 0;
+}