[PATCH synaptics] syndaemon: don't compare against a null-property. (#37459)

[Peter Hutterer]

synaptics_property is not set, touchpad_off_prop is the property we need to
check against.

False check for (nprops != 0) instead of (nprops < 0) would result in
syndaemon always reporting a touchpad device, even if none are present.

X.Org Bug 37459 <http://bugs.freedesktop.org/show_bug.cgi?id=37459>

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 tools/syndaemon.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/syndaemon.c b/tools/syndaemon.c
index 020bbde..a8a0499 100644
--- a/tools/syndaemon.c
+++ b/tools/syndaemon.c
@@ -465,7 +465,6 @@ dp_get_device(Display *dpy)
     XDeviceInfo *info		= NULL;
     int ndevices		= 0;
     Atom touchpad_type		= 0;
-    Atom synaptics_property	= 0;
     Atom *properties		= NULL;
     int nprops			= 0;
     int error			= 0;
@@ -495,10 +494,10 @@ dp_get_device(Display *dpy)
 
 	    while(nprops--)
 	    {
-		if (properties[nprops] == synaptics_property)
+		if (properties[nprops] == touchpad_off_prop)
 		    break;
 	    }
-	    if (!nprops)
+	    if (nprops < 0)
 	    {
 		fprintf(stderr, "No synaptics properties on device '%s'.\n",
 			info[ndevices].name);
-- 
1.7.4.4