stats: fix crash when stats.get/set is called with invalid parameters

Closes: #186

diff --git a/modules/stats/stats.c b/modules/stats/stats.c
index 96a5ba37dae0b057f590ecb7f24212cf2666b2f5..04c95771422a61f057ec51c8176a519d012b2f36 100644 (file)
--- a/modules/stats/stats.c
+++ b/modules/stats/stats.c
@@ -277,7 +277,11 @@ static int collect(kr_layer_t *ctx)
  */
 static char* stats_set(void *env, struct kr_module *module, const char *args)
 {
+       if (args == NULL)
+               return NULL;
+
        struct stat_data *data = module->data;
+
        auto_free char *pair = strdup(args);
        char *val = strchr(pair, ' ');
        if (val) {
@@ -303,6 +307,9 @@ static char* stats_set(void *env, struct kr_module *module, const char *args)
  */
 static char* stats_get(void *env, struct kr_module *module, const char *args)
 {
+       if (args == NULL)
+               return NULL;
+
        struct stat_data *data = module->data;
 
        /* Expecting CHAR_BIT to be 8, this is a safe bet */