[binutils-gdb] ada-lang.h: Add cast in GROW_VECT

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT a480de357b17b1b2057b8375284079ccafae39db ***

Author: Simon Marchi <simon.marchi@polymtl.ca>
Branch: master
Commit: a480de357b17b1b2057b8375284079ccafae39db

ada-lang.h: Add cast in GROW_VECT

The assignment requires a cast in C++.  We only use this macro for
vectors of chars, so adding (char *) diretly will do for now.

gdb/ChangeLog:

	* ada-lang.h (GROW_VECT): Add cast.