segfault fixed (hopefully)

Author: badasahog

src/nqrecreateindices.c

@@ -18,7 +18,7 @@ SEXP nqRecreateIndices(SEXP xo, SEXP len, SEXP indices, SEXP nArg, SEXP nomatch)
   const int inomatch = isNull(nomatch) ? 0 : INTEGER(nomatch)[0];
   int *inewstarts = INTEGER(newstarts);
 
-  memset(inewlen, 0, n);
+  memset(inewlen, 0, n * sizeof(int));
 
   // simplifying logic ... also fixes #2275
   for (int i = 0; i < length(indices); i++) {