grap log lock when initializing a destination

src/logging.c

@@ -118,20 +118,26 @@ static inline int uc_ll_2_syslog(enum UC_LOG_LEVEL l)
     return LOG_INFO;
 }
 
+//Note, this grabs the global lock
 static int uc_log_init_settings(struct uc_log_destination *dest)
 {
     int i;
+    int rc = -1;
+
+    pthread_mutex_lock(&g_log_lock);
 
     dest->module_settings = calloc(g_modules.cnt, sizeof *dest->module_settings);
-    if (dest->module_settings == NULL) {
-        return -1;
-    }
-
+    if (dest->module_settings != NULL) {
         for (i = 0; i < g_modules.cnt; i++) {
             dest->module_settings[i].log_level = g_modules.mods[i].log_level;
         }
 
-    return 0;
+        rc = 0;
+    }
+
+    pthread_mutex_unlock(&g_log_lock);
+
+    return rc;
 }
 
 struct uc_log_destination *uc_log_new_stderr(int log_level, int log_location)