fix oss-fuzz build

https://github.com/google/oss-fuzz/issues/1335

Change-Id: I7681413d5e45e1e2f1ff62a077a067b11e42b4bb
Reviewed-on: https://gerrit.libreoffice.org/53082Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sfx2/source/appl/appinit.cxx

@@ -142,7 +142,7 @@ Sequence< OUString > SAL_CALL SfxTerminateListener_Impl::getSupportedServiceName
 }
 
 
-typedef bool ( *PFunc_getSpecialCharsForEdit)( vcl::Window* i_pParent, const vcl::Font& i_rFont, OUString& o_rOutString );
+typedef bool ( *PFunc_getSpecialCharsForEdit)( vcl::Window* const i_pParent, const vcl::Font& i_rFont, OUString& o_rOutString );
 
 
 // Lazy binding of the GetSpecialCharsForEdit function as it resides in