Fix 2 compiler warnings.

src/alert-debuglog.c

@@ -443,7 +443,6 @@ static void AlertDebugLogDeInitCtx(OutputCtx *output_ctx)
  */
 OutputCtx *AlertDebugLogInitCtx(ConfNode *conf)
 {
-    int ret = 0;
     LogFileCtx *file_ctx = NULL;
 
     file_ctx = LogFileNewCtx();

src/util-logopenfile.c

@@ -39,10 +39,12 @@
 static FILE *
 SCLogOpenUnixSocketFp(const char *path, int sock_type)
 {
-    struct sockaddr_un sun = {0};
+    struct sockaddr_un sun;
     int s = -1;
     FILE * ret = NULL;
 
+    memset(&sun, 0x00, sizeof(sun));
+
     s = socket(PF_UNIX, sock_type, 0);
     if (s < 0) goto err;