Resolves: fdo#84698 crash in autoreplacement

Change-Id: I44d5dacb21870f77ca993b24f3a31433edb17c6d

editeng/source/misc/svxacorr.cxx

@@ -2791,7 +2791,8 @@ const SvxAutocorrWord* SvxAutocorrWordList::WordMatches(const SvxAutocorrWord *p
                 if (!left_wildcard)
                 {
                     // fdo#33899 avoid "1/2", "1/3".. to be replaced by fractions in dates, eg. 1/2/14
-                    if ( rTxt[nEndPos] == '/' && rChk.indexOf( '/' ) != -1 ) return NULL;
+                    if (rTxt.getLength() > nEndPos && rTxt[nEndPos] == '/' && rChk.indexOf('/') != -1)
+                        return NULL;
                     return pFnd;
                 }
                 // get the first word delimiter position before the matching ".*word" pattern