Do not use GC_noop1_ptr() for functional pointers

(fix of commit 0ca8be5)

Issue #627 (bdwgc).

* os_dep.c [(NEED_FIND_LIMIT || UNIX_LIKE || WRAP_MARK_SOME)
&& CPPCHECK && ADDRESS_SANITIZER] (GC_set_and_save_fault_handler):
Use GC_noop1((word)(GC_funcptr_uint)&fn) instead of GC_noop1_ptr(&fn).
* os_dep.c [MPROTECT_VDB && !DARWIN && CPPCHECK && ADDRESS_SANITIZER]
(GC_dirty_init): Likewise.

os_dep.c

@@ -936,7 +936,7 @@ GC_INNER void GC_setpagesize(void)
 #         endif
 #       endif /* !USE_SEGV_SIGACT */
 #       if defined(CPPCHECK) && defined(ADDRESS_SANITIZER)
-          GC_noop1_ptr(&__asan_default_options);
+          GC_noop1((word)(GC_funcptr_uint)&__asan_default_options);
 #       endif
     }
 #endif /* NEED_FIND_LIMIT || UNIX_LIKE || WRAP_MARK_SOME */
@@ -3504,7 +3504,7 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void)
 #     endif
 #   endif /* !MSWIN32 && !MSWINCE */
 #   if defined(CPPCHECK) && defined(ADDRESS_SANITIZER)
-      GC_noop1_ptr(&__asan_default_options);
+      GC_noop1((word)(GC_funcptr_uint)&__asan_default_options);
 #   endif
     return TRUE;
   }