apphelp: add a stub for ShimFlushCache

[Austin English]

http://bugs.winehq.org/show_bug.cgi?id=35035

-- 
-Austin
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diff --git a/dlls/apphelp/apphelp.c b/dlls/apphelp/apphelp.c
index a82bc94..e8fce78 100644
--- a/dlls/apphelp/apphelp.c
+++ b/dlls/apphelp/apphelp.c
@@ -74,3 +74,10 @@ BOOL WINAPI ApphelpCheckShellObject( REFCLSID clsid, BOOL shim, ULONGLONG *flags
     if (flags) *flags = 0;
     return TRUE;
 }
+
+BOOL WINAPI ShimFlushCache( HWND hwnd, HINSTANCE instance, LPCSTR cmdline, int cmd )
+{
+    FIXME("stub: %p %p %s %u\n", hwnd, instance, debugstr_a(cmdline), cmd);
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return TRUE;
+}
diff --git a/dlls/apphelp/apphelp.spec b/dlls/apphelp/apphelp.spec
index 76af9ad..60d931c 100644
--- a/dlls/apphelp/apphelp.spec
+++ b/dlls/apphelp/apphelp.spec
@@ -164,4 +164,4 @@
 @ stub SetPermLayers
 @ stub ShimDbgPrint
 @ stub ShimDumpCache
-@ stub ShimFlushCache
+@ stdcall ShimFlushCache(ptr ptr str long)