display: Fix missing condition for looping dpms_context

If (dpms_context == NULL) then, it iterates over the default context,
which might cause undefined behavior.

Change-Id: I222a8c798a332c3a93e89253bd4f586bbc4dcf08
Signed-off-by: Youngjae Cho <y0.cho@samsung.com>

diff --git a/src/display/display-dpms.c b/src/display/display-dpms.c
index ff5a2681cc563730bb279230c288a84e3f6bd86e..57d0e911e90bc8dbb2fafc621d04fac0bb07dfc7 100644 (file)
--- a/src/display/display-dpms.c
+++ b/src/display/display-dpms.c
@@ -508,7 +508,7 @@ static void wm_dpms_set_state(int on)
        uint32_t mode;
 
        // clear pending events
-       while (g_main_context_pending(dpms_context))
+       while (dpms_context && g_main_context_pending(dpms_context))
                g_main_context_iteration(dpms_context, true);
 
        if (!dpms_is_available()) {