Add prototype for SHFreeNameMappings.

include/shellapi.h

diff --git a/include/shellapi.h b/include/shellapi.h
index 098f3cf..76063a5 100644
--- a/include/shellapi.h
+++ b/include/shellapi.h
@@ -238,6 +238,8 @@
 DECL_WINELIB_TYPE_AW(SHNAMEMAPPING)
 DECL_WINELIB_TYPE_AW(LPSHNAMEMAPPING)
 
+void WINAPI SHFreeNameMappings(HANDLE hNameMappings);
+
 /******************************************
  * ShellExecute
  */