evas/cserve2: Fix segfault in cserve2 slave

Slaves always crash when loading SVG images.
The svg module was simply not a dynamic module.

src/bin/evas/evas_cserve2_slave.c

@@ -364,7 +364,7 @@ try_extension:
    if (loader)
      {
         module = evas_module_find_type(EVAS_MODULE_TYPE_IMAGE_LOADER, loader);
-        if (_image_file_header(fd, skey, &load_opts, result, module))
+        if (module && _image_file_header(fd, skey, &load_opts, result, module))
           goto success;
         loader = NULL;
         module = NULL;

src/bin/evas/evas_cserve2_slaves.c

@@ -128,7 +128,8 @@ _slave_proc_dead_cb(int pid, int status EINA_UNUSED)
 {
    Slave_Proc *s;
 
-   INF("Child dead with pid '%d'.", pid);
+   INF("Child dead with pid '%d': signal %d",
+       pid, WIFSIGNALED(status) ? WTERMSIG(status) : 0);
    s = _slave_proc_find(pid);
    if (!s)
      {