cam: Initialize CamApp::loopUsers_

The CamApp loopUsers_ member variable isn't initialized, which results
in random execution of the event loop. Fix it.

Fixes: caa6ffacb2 ("cam: Reorganize run() function and merge the two event loops")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Tested-by: Umang Jain <umang.jain@ideasonboard.com>

src/cam/main.cpp

@@ -56,6 +56,7 @@ private:
 CamApp *CamApp::app_ = nullptr;
 
 CamApp::CamApp()
+	: loopUsers_(0)
 {
 	CamApp::app_ = this;
 }