Buggy code in f-typeprint.c:f_print_type()

[Mark Kettenis]

Running the testsuite on amd64-unknown-openbsd3.6 made GDB dump core.
The cause is the following code in f-typeprint.c:f_print_type():

  demangled_args = varstring[strlen (varstring) - 1] == ')';

Here VARSTRING can be an empty string ("") if one uses the command

(gdb) ptype type

where type is a type and not a variable.  I'm not sure how to fix this
though, since I don't quite understand what this code is supposed to
do.

Mark