Fixed valgrind complain

Author: chaizhenhua

standalone/api.c

@@ -216,6 +216,8 @@ apr_status_t ap_http_out_filter(ap_filter_t *f, apr_bucket_brigade *b)  {
 }
 
 void modsecTerminate()  {
+    apr_pool_destroy(pool);
+    pool = NULL;
     apr_terminate();
 }
 
@@ -267,7 +269,7 @@ conn_rec *modsecNewConnection() {
 
     apr_pool_create(&pc, pool);
 
-    c = apr_palloc(pc, sizeof(conn_rec));
+    c = apr_pcalloc(pc, sizeof(conn_rec));
 
     c->base_server = server;
     c->id = 1;
@@ -300,7 +302,7 @@ request_rec *modsecNewRequest(conn_rec *connection, directory_config *config)
 
     apr_pool_create(&pr, connection->pool);
 
-    r = apr_palloc(pr, sizeof(request_rec));
+    r = apr_pcalloc(pr, sizeof(request_rec));
 
     r->connection = connection;
     r->server = server;

standalone/server.c

@@ -992,6 +992,7 @@ AP_DECLARE(apr_status_t) unixd_set_proc_mutex_perms(apr_proc_mutex_t *pmutex)
 #endif
             union semun ick;
             struct semid_ds buf;
+            memset(&buf,0,sizeof(buf));
 
             apr_os_proc_mutex_get(&ospmutex, pmutex);
             buf.sem_perm.uid = unixd_config.user_id;