Add stub for ShellDDEInit to let Windows explorer.exe get past the

dlls/shell32/shell32.spec

@@ -179,7 +179,7 @@
  185 stub SHHandleDiskFull
  186 stdcall ILGetDisplayNameEx(ptr ptr ptr long)
  187 stub ILGetPseudoNameW
- 188 stub ShellDDEInit
+ 188 stdcall ShellDDEInit(long)
  189 stdcall ILCreateFromPathA(str)
  190 stdcall ILCreateFromPathW(wstr)
  195 stdcall SHFree(ptr)

dlls/shell32/shell32_main.c

@@ -859,6 +859,15 @@ void WINAPI FreeIconList( DWORD dw )
 { FIXME("(%lx): stub\n",dw);
 }
 
+
+/*************************************************************************
+ * ShellDDEInit (SHELL32.@)
+ */
+void WINAPI ShellDDEInit(BOOL start)
+{
+    FIXME("stub: %d\n", start);
+}
+
 /***********************************************************************
  * DllGetVersion [SHELL32.@]
  *