[binutils-gdb] gdb/cli: Remove casts of NULL during assignment.

[sergiodj+buildbot at redhat dot com]

*** TEST RESULTS FOR COMMIT b03e6ad9cd2064214c0fbff179c7e47c855315e3 ***

Author: Andrew Burgess <andrew.burgess@embecosm.com>
Branch: master
Commit: b03e6ad9cd2064214c0fbff179c7e47c855315e3

gdb/cli: Remove casts of NULL during assignment.

In the following code:

    struct symbol *wsym = (struct symbol *) NULL;

the cast of NULL is redundant, it adds noise, and is just one more thing
to change if the type of wsym ever changes.  There are a relatively
small number of places in gdb where the above code pattern is used.
Usually the cast is removed like this:

    struct symbol *wsym = NULL;

This commit updates all the places within the gdb/cli directory where we
cast NULL during assignment, removing the cast.

gdb/ChangeLog:

	* cli/cli-decode.c (find_cmd): Remove cast of NULL pointer.