minor fixes:

- Video.cpp: treating warnings as errors, missing return NULL in video thread
- Makefile: added -ltinfo due to missing references

Makefile

@@ -1,7 +1,7 @@
 all: dvdemu
 
 dvdemu: DVDEmu.cpp DVDEmu.h Serial.cpp Serial.h Video.cpp Video.h Toshiba_SD-B100.cpp Toshiba_SD-B100.h Victor_XV-D701.cpp Victor_XV-D701.h
-	g++ -Wall -Werror -D_BSD_SOURCE -pthread -lcurses -o dvdemu DVDEmu.cpp Serial.cpp Video.cpp Toshiba_SD-B100.cpp Victor_XV-D701.cpp -ggdb
+	g++ -Wall -Werror -D_BSD_SOURCE -pthread -ltinfo -lcurses -o dvdemu DVDEmu.cpp Serial.cpp Video.cpp Toshiba_SD-B100.cpp Victor_XV-D701.cpp -ggdb
 
 .DUMMY: clean
 clean:

Video.cpp

@@ -133,6 +133,8 @@ void *VideoThread( void *state )
             usleep( 10000 );
         }
     }
+
+	return NULL;
 }
 
 void VideoThreadAction( unsigned int opcode, unsigned int argument )