Fix spacing of close button

Displayed incorrectly for some languages

app/src/components/Controls/TopBar.js

@@ -78,8 +78,8 @@ const styles = (theme) =>
 		},
 		actionButton :
 		{
-			margin  : theme.spacing(1),
-			padding : 0
+			margin  : theme.spacing(1, 0),
+			padding : theme.spacing(0, 1)
 		}
 	});
 
@@ -446,4 +446,4 @@ export default withRoomContext(connect(
 			);
 		}
 	}
-)(withStyles(styles, { withTheme: true })(TopBar)));
+)(withStyles(styles, { withTheme: true })(TopBar)));