preserve const-ness when calling strrchr()

strrchr() preserves the const-ness of the argument, the argument is a const char*
so the return value should also be a const.

diff --git a/src/dpdkstat.c b/src/dpdkstat.c
index ae93e53b2d84829a9db204a0f2795fec17b398d2..58abbe4e4a1e7115a386d066835ff2eff0f4d8ce 100644 (file)
--- a/src/dpdkstat.c
+++ b/src/dpdkstat.c
@@ -310,7 +310,7 @@ int dpdk_helper_command_handler(dpdk_helper_ctx_t *phc, enum DPDK_CMD cmd) {
 
 static void dpdk_stats_resolve_cnt_type(char *cnt_type, size_t cnt_type_len,
                                         const char *cnt_name) {
-  char *type_end;
+  const char *type_end;
   type_end = strrchr(cnt_name, '_');
 
   if ((type_end != NULL) && (strncmp(cnt_name, "rx_", strlen("rx_")) == 0)) {