Fix array-out-of-bounds error in hunspell

src/hunspell/hunspell.cxx

Index: src/hunspell/hunspell.cxx
diff --git a/src/hunspell/hunspell.cxx b/src/hunspell/hunspell.cxx
index 0d606e083f5f558aa77130f1fe2b5e9f0643c2b5..b3f37394a7b3ce64541851afd0cb9ccdea1dc61a 100644
--- a/src/hunspell/hunspell.cxx
+++ b/src/hunspell/hunspell.cxx
@@ -137,7 +137,9 @@ int Hunspell::cleanword2(char * dest, const char * src,
    if (utf8) {
       *nc = u8_u16(dest_utf, MAXWORDLEN, dest);
       // don't check too long words
-      if (*nc >= MAXWORDLEN) return 0;
+      // TODO(rouslan): Remove the interim change below when this patch lands:
+      // http://sf.net/tracker/?func=detail&aid=3595024&group_id=143754&atid=756395.
+      if (*nc >= MAXWORDLEN - 1) return 0;
       if (*nc == -1) { // big Unicode character (non BMP area)
          *pcaptype = NOCAP;
          return nl;