app_server: Fix typo

Author: Numerio

src/servers/app/drawing/interface/linux/drm/DrmHWInterface.h

@@ -176,7 +176,7 @@ class DrmHWInterface : public HWInterface {
 			struct libseat*		fSeat;
 			int					fDeviceId;
 			std::atomic<bool>	fSessionActive;
-.
+
 			std::atomic<bool>	fInitialized;
 			std::atomic<bool>	fRunning;