libs/light: fix tv_sec printf format

Don't assume tv_sec is a unsigned long, it is 64 bits on NetBSD 32 bits.
Use %jd and cast to (intmax_t) instead

Signed-off-by: Manuel Bouyer <bouyer@netbsd.org>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>

tools/libs/light/libxl_create.c

@@ -496,7 +496,7 @@ int libxl__domain_build(libxl__gc *gc,
         vments[2] = "image/ostype";
         vments[3] = "hvm";
         vments[4] = "start_time";
-        vments[5] = GCSPRINTF("%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
+        vments[5] = GCSPRINTF("%jd.%02d", (intmax_t)start_time.tv_sec,(int)start_time.tv_usec/10000);
 
         localents = libxl__calloc(gc, 13, sizeof(char *));
         i = 0;
@@ -535,7 +535,7 @@ int libxl__domain_build(libxl__gc *gc,
         vments[i++] = "image/kernel";
         vments[i++] = (char *) state->pv_kernel.path;
         vments[i++] = "start_time";
-        vments[i++] = GCSPRINTF("%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
+        vments[i++] = GCSPRINTF("%jd.%02d", (intmax_t)start_time.tv_sec,(int)start_time.tv_usec/10000);
         if (state->pv_ramdisk.path) {
             vments[i++] = "image/ramdisk";
             vments[i++] = (char *) state->pv_ramdisk.path;
@@ -1502,7 +1502,7 @@ static void domcreate_stream_done(libxl__egc *egc,
         vments[2] = "image/ostype";
         vments[3] = "hvm";
         vments[4] = "start_time";
-        vments[5] = GCSPRINTF("%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
+        vments[5] = GCSPRINTF("%jd.%02d", (intmax_t)start_time.tv_sec,(int)start_time.tv_usec/10000);
         break;
     case LIBXL_DOMAIN_TYPE_PV:
         vments = libxl__calloc(gc, 11, sizeof(char *));
@@ -1512,7 +1512,7 @@ static void domcreate_stream_done(libxl__egc *egc,
         vments[i++] = "image/kernel";
         vments[i++] = (char *) state->pv_kernel.path;
         vments[i++] = "start_time";
-        vments[i++] = GCSPRINTF("%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
+        vments[i++] = GCSPRINTF("%jd.%02d", (intmax_t)start_time.tv_sec,(int)start_time.tv_usec/10000);
         if (state->pv_ramdisk.path) {
             vments[i++] = "image/ramdisk";
             vments[i++] = (char *) state->pv_ramdisk.path;