id128: fix initializer element is not constant

Was getting:

  ../src/id128/id128.c:15:1: error: initializer element is not constant
   static sd_id128_t arg_app = SD_ID128_NULL;
    ^
when building on CentOS 7.

Other parts of the code initialize `static sd_id128_t` to {} and this
was the original setting before a19fdd66c22 anyways.

diff --git a/src/id128/id128.c b/src/id128/id128.c
index 4c5d696c32aebace223fea7165d1557559a60b84..cd4d5414503bbbbb0b220972a96f4561da528ccf 100644 (file)
--- a/src/id128/id128.c
+++ b/src/id128/id128.c
@@ -12,7 +12,7 @@
 #include "verbs.h"
 
 static Id128PrettyPrintMode arg_mode = ID128_PRINT_ID128;
-static sd_id128_t arg_app = SD_ID128_NULL;
+static sd_id128_t arg_app = {};
 
 static int verb_new(int argc, char **argv, void *userdata) {
         return id128_print_new(arg_mode);