C++ PATCH for c++/63588 (ICE with empty template args to variable template)

[Jason Merrill]

uses_template_parms ought to be able to deal with NULL_TREE.

Tested x86_64-pc-linux-gnu, applying to trunk.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 63588.patch
Type: text/x-patch
Size: 893 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20141121/ff3a1ecb/attachment.bin>