Allow selection of first note in pianoroll, as long as the mouse isn't too fast

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@978 0778d3d1-df1d-0410-868b-ea421aaaa00d

src/gui/piano_roll.cpp

@@ -1174,7 +1174,7 @@ void pianoRoll::mouseMoveEvent( QMouseEvent * _me )
 								midiTime() );
 			}
 		}
-		if( _me->x() <= WHITE_KEY_WIDTH )
+		if( _me->x() < WHITE_KEY_WIDTH )
 		{
 			update();
 			return;