[sysprof] battery: wait for first battery polling

[Christian Hergert <chergert src gnome org>]

commit a5ef58dde6ffa3ad66af985ae3619742d3183f14
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jun 13 20:13:10 2019 -0700

    battery: wait for first battery polling

 src/libsysprof/sysprof-battery-source.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/src/libsysprof/sysprof-battery-source.c b/src/libsysprof/sysprof-battery-source.c
index b3934e2..2e8d873 100644
--- a/src/libsysprof/sysprof-battery-source.c
+++ b/src/libsysprof/sysprof-battery-source.c
@@ -96,7 +96,6 @@ sysprof_battery_source_prepare (SysprofSource *source)
       g_autofree gchar *type_data = NULL;
       g_autofree gchar *model_data = NULL;
       g_autofree gchar *charge_full_data = NULL;
-      g_autofree gchar *charge_now_data = NULL;
       SysprofCaptureCounter ctr;
       Battery bat = {0};
 
@@ -116,8 +115,8 @@ sysprof_battery_source_prepare (SysprofSource *source)
       if (g_file_get_contents (charge_full_path, &charge_full_data, NULL, NULL))
         bat.charge_full = atoi (charge_full_data);
 
-      if (g_file_get_contents (charge_now_path, &charge_now_data, NULL, NULL))
-        bat.charge_now = atoi (charge_now_data);
+      /* Wait for first polling */
+      bat.charge_now = 0;
 
       g_strstrip (bat.id);
       g_strstrip (bat.name);