[DGD] Bug with function pointers

[Blain]

If function 'foo' does not exist:
  &foo();
results in:

/usr/System/initd.c, 120: Undefined function foo
Feb 23 13:41:18 ** Failed to compile "/usr/System/core.c"
 519 initialize        /kernel/sys/driver
 505 _initialize       /kernel/sys/driver
 337 initd             /kernel/sys/rsrcd
 286 compile_object    /kernel/lib/auto (/kernel/sys/rsrcd)
 241 _compile          /kernel/lib/auto (/kernel/sys/rsrcd)
Feb 23 13:41:18 ** Initialization failed.
FREE(200d1d7c/28), str.cpp line 49:
 00 00 00 00 00 00 00 00 10 00 'b 'u 'i 'l 't 'i 'n '/ 'f 'u 'n 'c 't 'i 'o
'n