Fix 1 byte searching in BinSearch function.

src/util-binsearch.c

@@ -49,6 +49,10 @@ BinSearch(const u_int8_t *haystack, size_t haystack_len,
         if (*haystack != *n) {
             continue;
         }
+        /* one byte needles */
+        if (needle_len == 1)
+            return haystack;
+
         for (h = haystack+1, n++; h != hmax; h++, n++) {
             //printf("h %c n %c\n", isprint(*h) ? *h : 'X', *n);
             if (*h != *n) {