FBXLoader: Return empty animations array by default.

examples/js/loaders/FBXLoader.js

@@ -2349,15 +2349,17 @@ THREE.FBXLoader = ( function () {
 
 			var rawClips = this.parseClips();
 
-			if ( rawClips === undefined ) return;
+			if ( rawClips !== undefined ) {
 
-			for ( var key in rawClips ) {
+				for ( var key in rawClips ) {
 
-				var rawClip = rawClips[ key ];
+					var rawClip = rawClips[ key ];
 
-				var clip = this.addClip( rawClip );
+					var clip = this.addClip( rawClip );
 
-				animationClips.push( clip );
+					animationClips.push( clip );
+
+				}
 
 			}