lynx-dev frag redir crash fixes

[Klaus Weide]

Some redirection message can lead to invalid memory access.  A malicious
server could use this to cause a SIGSEGV etc. (or equivalent on other
platforms).  (Write to me privately if you want a demonstration.)

   Klaus

* Avoid invalid memory access that can result from redirection messages
  that include a fragment in the new URL.

(patch against 2.8.3pre.6 - nothing should have changed here since then.)
Index: 1.35/WWW/Library/Implementation/HTAccess.c
--- 1.35/WWW/Library/Implementation/HTAccess.c Tue, 18 Apr 2000 10:26:31 -0500
+++ 1.35(w)/WWW/Library/Implementation/HTAccess.c Tue, 25 Apr 2000 12:09:26 
-0500
@@ -823,7 +823,7 @@
            NewDoc.bookmark = anchor->bookmark;
            NewDoc.isHEAD = anchor->isHEAD;
            NewDoc.safe = anchor->safe;
-           anchor = (HTParentAnchor *)HTAnchor_findAddress(&NewDoc);
+           anchor = HTAnchor_parent(HTAnchor_findAddress(&NewDoc));
        }
     }
     /*
Index: 1.35/src/LYGetFile.c
--- 1.35/src/LYGetFile.c Tue, 18 Apr 2000 10:26:31 -0500
+++ 1.35(w)/src/LYGetFile.c Tue, 25 Apr 2000 12:09:29 -0500
@@ -1055,11 +1055,14 @@
                            return(NULLFILE);
 
                        } else {
-                       /*
-                        *  May set www_search_result.
-                        */
-                           if (pound != NULL)
+                           if (pound != NULL) {
+                               if (!HTMainText) /* this should not happen... */
+                                   return(NULLFILE); /* but it can. - kw */
+                               /*
+                                *  May set www_search_result.
+                                */
                                HTFindPoundSelector(pound+1);
+                           }
                            return(NORMAL);
                        }
                    }