Euler: Add missing semicolon (#8668)

src/math/Euler.js

@@ -216,7 +216,7 @@ THREE.Euler.prototype = {
 
 		} else {
 
-			console.warn( 'THREE.Euler: .setFromRotationMatrix() given unsupported order: ' + order )
+			console.warn( 'THREE.Euler: .setFromRotationMatrix() given unsupported order: ' + order );
 
 		}